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  • 2000-2004  (100)
  • 1980-1984  (3,650)
  • 1920-1924  (3,032)
  • Inorganic Chemistry  (6,538)
  • Immunohistochemistry
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Year
Keywords
  • 101
    Electronic Resource
    Electronic Resource
    Immunohistochemical reactivity of a monoclonal antibody prepared against human breast carcinoma (1984)
    Springer
    Virchows Archiv 402 (1984), S. 389-404 
    Details
    ISSN: 1432-2307
    Keywords: Monoclonal antibody ; Immunohistochemistry ; Human breast carcinoma ; Epithelial cell marker
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The reactivity profile of an IgM monoclonal antibody, MBR1, raised against the human breast cancer cell line MCF7, was studied in a variety of human tumours and non-neoplastic tissues by light microscopic immunohistochemistry. The range of reactivity included specific types of non-neoplastic epithelial cells and a number of epithelial tumours. Most mammary carcinomas reacted with MBR1, but adenocarcinomas and squamous carcinomas from different sites were also strongly positive. Different patterns of immunoreactivity were apparent in microscopically normal tissues, in tissues with inflammatory changes and in carcinomas. Heterogeneous staining, despite morphological similarities, was documented in neoplastic and non-neoplastic epithelial cells. The reactivity of MBR1 was different from that reported for other monoclonal antibodies, but revealed similarities to that of monoclonal antibodies and polyclonal sera against human milk fat globule membrane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00734636
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  • 102
    Electronic Resource
    Electronic Resource
    Immunofluoresceuce study of secretory epithelial markers in pleomorphic adenomas (1984)
    Springer
    Virchows Archiv 403 (1984), S. 291-300 
    Details
    ISSN: 1432-2307
    Keywords: Pleomorphic adenomas ; Immunohistochemistry ; Lactoferrin ; Carcinoembryonic antigen ; Secretory component
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Amylase (Am), lactoferrin (Lf), lysozyme (Ly), secretory component (SC), epithelial IgA, and epithelial IgM were traced by paired immunofluorescence staining in ethanol-fixed specimens from 15 pleomorphic adenomas of the parotid gland. Epithelial elements positive forsome of the markers were detected in a variable number of the specimens (Am, 0; Lf, 11, Ly, 2; CEA, 6; SC, 11; IgA, 9; and IgM, 6); their expression seemed to depend on a certain degree of glandular differentiation. Variable co-expression of secretory epithelial markers probably reflected different degrees of differentiation, indicating that clonal diversification may explain the histological complexity of pleomorphic adenomas. The most consistent expression (in almost 75% of thespecimens) shown by Lf and SC might further reflect histogenetic relationship to intercalated ducts in which these antigens are normally found in largest amounts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694905
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  • 103
    Electronic Resource
    Electronic Resource
    Distribution of collagen types I and III and basal lamina in human gastric carcinoma: An immunohistochemical and electron microscopic study (1984)
    Springer
    Virchows Archiv 403 (1984), S. 313-322 
    Details
    ISSN: 1432-2307
    Keywords: Gastric carcinoma ; Scirrhous carcinoma ; Collagen ; Immunohistochemistry ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Collagen types I and III were examined immunohistochemically in 32 cases of gastric carcinoma classified as poorly differentiated adenocarcinoma with scirrhous stroma, well differentiated adenocarcinoma with intermediate stroma, or poorly differentiated adenocarcinoma with medullary stroma. In the stroma of scirrhous carcinoma, types I and III collagens were distributed abundantly in fibrillar or granular patterns with little difference in the intensity of staining. In well differentiated adenocarcinoma, type I collagen was diffusely distributed in the stroma with type III collagen distributed sparsely. In poorly differentiated adenocarcinoma with medullary stroma, the two types of collagen were only found around capillaries, constituting the tumor interstitium. Electron microscopic examination of scirrhous carcinoma showed tumor cells partially covered with fibroblasts, and discontinuous basal lamina, collagen fibers and microfibrils present between tumor cells and fibroblasts. In well differentiated carcinoma, tumor cells were surrounded by fibroblasts, and well developed basal lamina was observed beneath the tumor cells. In poorly differentiated carcinoma with medullary stroma, the stroma consisted of capillaries and very few fibroblasts with discontinuous basal lamina occasionally being present between tumor cells and fibroblasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00737282
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  • 104
    Electronic Resource
    Electronic Resource
    S-100 protein distribution in liposarcoma An immunoperoxidase study with special reference to the distinction of liposarcoma from myxoid malignant fibrous histiocytoma (1984)
    Springer
    Virchows Archiv 405 (1984), S. 1-10 
    Details
    ISSN: 1432-2307
    Keywords: Liposarcoma ; Malignant fibrous histiocytoma ; Soft tissue neoplasms ; S-100 protein ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The presence and distribution of S-100 protein were studied in 63 cases of liposarcoma and 20 cases of myxoid malignant fibrous histiocytoma (MFH), using the immunoperoxidase technique. Normal adipose tissue and benign lipomatous tumours were also studied by the same technique, for purposes of comparison. In all liposarcomas, most of the adipocytes and vacuolated lipoblasts were positive for S-100 protein, although the tumour cells in non-lipogenic areas of dedifferentiated liposarcoma and the non-vacuolated giant cells with a deeply eosinophilic cytoplasm in the pleomorphic liposarcomas were devoid of S-100 protein immunoreaction products. One third of the myxoid type liposarcomas contained numerous immunoreactive, immature-appearing spindle or oval cells, reminiscent of the primitive fat organs of white adipose tissue. Conversely, none of the myxoid MFHs contained S-100 protein in the tumour cells, including the irregularly vacuolated ones. These results suggests that the immunohistochemical demonstration of S-100 protein is a useful diagnostic tool, particularly for the assessment of vacuolated tumour cells and for the diagnosis of myxoid tumours.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694921
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  • 105
    Electronic Resource
    Electronic Resource
    Immunohistochemical study on the liver in autopsy cases with disseminated intravascular coagulation (DIC) with reference to clinicopathological analysis (1984)
    Springer
    Virchows Archiv 404 (1984), S. 229-241 
    Details
    ISSN: 1432-2307
    Keywords: Disseminated intravascular coagulation ; Liver lesions ; Thrombosis ; Immunohistochemistry ; Fibrin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Immunohistochemical and clinicopathological studies were performed in 27 autopsy cases with indisputable DIC, which had been selected from 1,800 autopsy cases of elderly people based on the following two criteria; 1. presence of fibrin thrombi in glomeruli, and 2. presence of fresh patchy necrotic foci in myocardium and/or fibrin thrombi in splenic sinuses. A high incidence of liver lesions (22/27) was revealed in autopsy cases with indisputable DIC. The liver lesions could be classified into four groups. Group-I (Central degeneration) was characterized by massive precipitation of fibrin irregularly around the central vein, causing parenchymal damage. Group-II (Central necrosis), showed coagulation necrosis in the cental zone due to circulatory disturbance caused by either shock as a cause of DIC or abrupt cessation of blood flow into the lobules following fibrin thrombus formation in vessels of Glisson's sheath. Both group-I and -II showed a short clinical duration of DIC. Group-III (Sinusoidal thrombosis), showed the presence of fibrin thrombi in sinusoids with mild parenchymal damage and long clinical duration of DIC. Group-IV (No thrombosis), showed neither parenchymal damage nor fibrin thrombi in sinusoids, but a long clinical duration of DIC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694889
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  • 106
    Electronic Resource
    Electronic Resource
    Immunohistochemical demonstration of cytokeratins in endocrine cells of the human pituitary gland and in pituitary, adenomas (1984)
    Springer
    Virchows Archiv 404 (1984), S. 359-368 
    Details
    ISSN: 1432-2307
    Keywords: Immunohistochemistry ; Pituitary gland ; Pituitary adenomas ; Cytokeratins ; Intermediate filaments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Ten non-neoplastic pituitary glands and 22 pituitary adenomas producing different hormones were studied by immunofluorescence microscopy as well as peroxidase-antiperoxidase and biotin-avidin techniques on frozen sections and formalin-fixed, paraffin-embedded material using antibodies to cytokeratin, vimentin, GFAP, neurofilament protein and different pituitary hormones. The endocrine cells in non-neoplastic pituitary glands as well as in most pituitary adenomas were cytokeratin-positive. The cytoplasmic cytokeratin distribution patterns of non-neoplastic and tumor cells were similar and typical of the type of hormone produced: GH-producing normal cells showed a paranuclear condensation of cytokeratin-reactive intermediate filaments; this accumulation was even further accentuated in GH-producing adenomas resulting in fibrous bodies (Kovacs and Horvath 1978) decorated by cytokeratin antibodies. Prolactin-producing cells showed a less intense cytoplasmic cytokeratin-specific staining with focal paranuclear accentuation in non-neoplastic as well as in neoplastic glands. ACTH-producing cells in normal pituitary glands as well as in adenomas exhibited a strong and more uniform cytoplasmic cytokeratin staining. The cytokeratin reactivity in glycoprotein hormone-producing cells of non-neoplastic tissue and adenomas was weak. Vimentin and GFAP reactivity was confined to agranular folliculo-stellate cells. The specific and different distribution patterns of cytokeratins in pituitary cells can, therefore, provide an (indirect) indication to the production of a specific hormone if immunocytochemistry fails to demonstrate hormone production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695220
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  • 107
    Electronic Resource
    Electronic Resource
    Elephantiasis neuromatosa (1984)
    Springer
    Virchows Archiv 404 (1984), S. 427-434 
    Details
    ISSN: 1432-2307
    Keywords: Elephantiasis neuromatosa ; Neurofibromatosis ; Electron microscopy ; Immunohistochemistry ; S-100 protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An example of elephantiasis neuromatosa, an unusual variant of neurofibromatosis, coexistent with lipomatosis is presented. This dual cell population produced a diffuse swelling of the gluteal sulcus of a young female. The neurogenous origin of the spindle cell component was substantiated by immunoreactivity for S-100 protein as well as by the fine structural observation of a regular basement membrane coating and a profusion of Luse bodies. As far as can be ascertained, this is the first reported immunohistochemical and ultrastructural study of this particular variant of peripheral nerve sheath lesion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695226
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  • 108
    Electronic Resource
    Electronic Resource
    A method for T-antigen demonstration by a polyclonal antibody and peanut lectin; elimination of cross-reaction with naturally occurring antibodies (1984)
    Springer
    Virchows Archiv 404 (1984), S. 159-166 
    Details
    ISSN: 1432-2307
    Keywords: T-antigen ; Peanut lectin ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Antisera and a lectin were used to demonstrate T-antigens in colorectal carcinomas. Rabbits were immunized with red blood cells on which the T-antigen had been exposed. The obtained polyclonal antiserum and a crude lectin (PNA) prepared from peanuts were used in an immunoperoxidase technique. The crude lectin and a chromatographic pure lectin showed the same staining specificity. Different fixatives, length of fixation and buffer compositions were tested on paraplast and frozen sections. Four per cent formaldehyde preserved the antigens well in paraplast embedded tissues when fixation was shorter than 48 h. In the immunoperoxidase technique the chromatogen used was 3-amino-9-ethyl-carbazole whose staining intensity was sensitive to the H2O2 concentration. Agglutination of T-exposed red blood cells was used to assess the anti-T titre of various sera. Normal animal serum contained anti-T antibodies, and the possibility of false positive reactions and methods to avoid it in immunohistochemistry is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00704060
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  • 109
    Electronic Resource
    Electronic Resource
    Immunohistochemistry of carcinoembryonic antigen, secretory component and lysozyme in benign and malignant common bile duct tissues (1984)
    Springer
    Virchows Archiv 403 (1984), S. 271-280 
    Details
    ISSN: 1432-2307
    Keywords: Carcinoembryonic antigen ; Secretory component ; Lysozyme ; Immunohistochemistry ; Common bile duct
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An immunoperoxidase technique has been utilized for the localization of carcinoembryonic antigen (CEA), Secretory component (SC) and lysozyme (LZ) in normal and cancerous common bile duct tissues. Little or no CEA was found in the non-cancerous common bile duct tissues. SC was found in the surface epithelium and accessory gland epithelium and LZ was demonstrated only in the accessory glands. Some inflammatory cells were also positively stained for LZ. In adenocarcinoma, CEA was always present on the luminar border of the carcinoma cells, occasionally with intercellular and intracellular localization. LZ was absent, or only faintly detected in carcinoma. SC was generally distributed in well-differentiated adenocarcinoma cells, but showed a reduced intensity of staining with progressive dedifferentiation. These findings suggest that CEA, SC and LZ could be useful markers providing valuable information in the pathological diagnosis of bile duct carcinoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694903
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  • 110
    Electronic Resource
    Electronic Resource
    Granular cell tumour of the mammary gland simulating malignancy (1984)
    Springer
    Virchows Archiv 403 (1984), S. 391-400 
    Details
    ISSN: 1432-2307
    Keywords: Immunohistochemistry ; Electron microscopy ; Light microscopy ; Granular cell tumour ; Mammary gland neoplasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Primary granular cell tumours of the breast in 35 2and 55 year old women were studied by light microscopy, transmission electron microscopy and immunohistochemistry. Light and electron microscopy revealed a neural origin of the tumours and this was further substantiated by immunohistochemical studies, with positive S-100 protein reaction and negative reactions for surface heavy and light chains, CEA, alfa-1-antitrypsin, muramidase and GFA-protein. Granular cell tumour of the mammary gland is a very rare tumour. Clinically it sometimes simulates carcinoma because of its fibrous consistency, fixation to pectoral fascia and skin retraction. The diagnosis of granular cell tumour should be included in the differential diagnosis of carcinoma of the breast. The granular cell tumour is derived from neuro-ectodermal tissue. Whether it represents a neurogenic cell-confined metabolic disturbance with lysosomal activation, or a true neoplasm remains to be elucidated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00737288
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  • 111
    Electronic Resource
    Electronic Resource
    Serotonin nerve fibers in the primary visual cortex of the monkey (1984)
    Springer
    Anatomy and embryology 169 (1984), S. 1-8 
    Details
    ISSN: 1432-0568
    Keywords: Serotonin ; Primary visual cortex ; Monkey ; Ultrastructure ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A quantitative and immunoelectronmicroscopical analysis of serotonin nerve fibers in the primary visual cortex of the monkey (Macaca fuscata) was made using a sensitive immunoperoxidase method for serotonin. The overall numerical density of serotonin-containing varicosities in the primate striate cortex was approximately 770,000/mm3 and the highest concentration of immunore-active varicosities (ca. 1,400,000/mm3) was observed in the upper portion of layer IVc, the next highest concentration being in layer IVb (ca. 1,180,000/mm3). At the ultrastructural level, the electron dense immunoreactive products were observed in the small granules (10–65 nm in diameter). The varicosities were usually small (0.5–1.0 μm in diameter) and made contact with both stellate and pyramidal cells. Serotonin fibers were often in close apposition to the poorly myelinated axons in layers IVb, V, and VI, and they rarely formed distinct synaptic structures with unlabelled neuronal elements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00300581
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  • 112
    Electronic Resource
    Electronic Resource
    Immunohistochemical demonstration of the serotonin neuron system in the central nervous system of the bullfrog, Rana catesbeiana (1984)
    Springer
    Anatomy and embryology 169 (1984), S. 219-229 
    Details
    ISSN: 1432-0568
    Keywords: Serotonin ; Immunohistochemistry ; Central nervous system ; Frog
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The distribution of serotonin immunoreactivity in the brain of the bullfrog (Rana catesbeiana) was studied, using the peroxidase-antiperoxidase (PAP) immunohistochemical method with serotonin antiserum. The somata of the serotonin neurons were mainly located in the raphe regions of the brain stem from the level of the caudal mesencephalon to that of the spinomedullary junction. A small number of serotonin neurons were also distributed as crebrospinal-fluid contacting neurons in the preoptic recess organ (PRO), the paraventricular organ (PVO), and the nucleus infundibularis dorsalis (Nid). In the raphe region, these serotonin neurons formed nearlycontinuous bilaterally-symmetrical cell columns along the caidline of the brain stem, divided into lateral and medial groups. The medial group was further subdivided into rostral and caudal parts. Processes of the serotonin neurons were widely distributed in the central nervous system, forming dense networks in various regions. The greates concentrations of these fibers were in the nucleus medialis speti, lateral portion of striatum, nucleus corporis geniculi, nucleus entopeduncularis, periventricular gray of ventral hypothalamus, optic tectum, nucleus isthmi, nucleus interpeduncularis, dorsal edge of medulla oblongata, and fasciculus solitarius.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315627
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  • 113
    Electronic Resource
    Electronic Resource
    Langerhans cells in various benign and malignant pigment-cell lesions of the skin (1984)
    Springer
    Archives of dermatological research 276 (1984), S. 283-287 
    Details
    ISSN: 1432-069X
    Keywords: Langerhans cells ; Immunohistochemistry ; Pigment-cell lesions ; Skin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We used immunohistochemistry to study Langerhans cells (LCs) and the composition of the dermal inflammatory infiltrate both in normal skin and in biopsies from various benign and malignant pigment-cell lesions. In normal skin and most benign pigment-cell lesions, epidermal LCs are regularly distributed. OKT6-Positive cells outnumber the OKIa-positive cells. The inconspicuous dermal infiltrate studied in these biopsies was composed of helper and suppressor/cytotoxic T cells and some dermal LCs. More epidermal LCs with an abnormal cytologic presentation were found in a halo naevus and in the radial growth part of primary malignant melanomas. This finding was associated with a dermal infiltrate composed of suppressor/cytotoxic T cells, suggesting a defense mechanism of the host towards abnormal melanocytes. Epidermal LCs were rare in the central part of the biopsies which showed a primary malignant melanoma in its vertical growth. A dermal inflammatory infiltrate was absent in that area. These findings are interpreted as the morphologic expression of a damaged immune system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00404618
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  • 114
    Electronic Resource
    Electronic Resource
    Distribution of serotonin-immunoreactivity in the diencephalon and mesencephalon of the trout, Salmo gairdneri (1984)
    Springer
    Anatomy and embryology 169 (1984), S. 193-204 
    Details
    ISSN: 1432-0568
    Keywords: Teleosts ; Serotonin ; Immunohistochemistry ; Diencephalon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In this paper the serotonin-containing neurons in the diencephalon and mesencephalon of the trout have been studied by immunocytochemistry. Serotonin-immunoreactive perikarya, fibres and terminals were visualized by using well-characterized antibodies to serotonin. Six areas could be demonstrated to contain serotonin-immunoreactive cellbodies. 1. A group of cells, situated ventral to the commissura posterior; 2. A region within the confines of the nucleus recessi lateralis and a few scattered cells dorsally to this nucleus; 3. Neurons, situated ventral to the recessus lateralis hypothalami, within the nucleus tuberis inferior; 4. Cells which are situated within the borders of the nucleus recessi posterioris; 5. A number of cells, situated within the nucleus raphes superior and finally: 6. Perikarya, located dorsolateral to the nucleus raphes superior. The following three regions showed a very high density of serotonin-immunoreactive fibres and terminals: A. the most dorsal portion of the nucleus diffusus tori lateralis; B. the area dorsal to the recessus lateralis and C. the area surrounding the recessus posterior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303149
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  • 115
    Electronic Resource
    Electronic Resource
    Immunohistochemical localization of cardiodilatin in myoendocrine cells of the cardiac atria (1984)
    Springer
    Anatomy and embryology 170 (1984), S. 123-127 
    Details
    ISSN: 1432-0568
    Keywords: Heart Atrium ; Myoendocrine cells ; Cardiodilatin ; Peptide hormone ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Region-specific antibodies against synthetic N-terminal fragments of cardiodilatin (CDD) were raised in rabbits and used for the immunohistochemical detection of this new peptide hormone in the myoendocrine cells within the cardiac atria of several species. The peroxidase-antiperoxidase (PAP) and fluorescein isothiocyanate (FITC) immunohistochemical methods gave identical results of cardiodilatin-immunoreactivity (CDD-IR) within the tissue. In addition to the porcine right atrial appendage, myoendocrine cells with CDD-IR were also detected in the left atrium of porcine heart, as well as in other species such as dog and cat. The exact localization of the immunoreactivity in specific secretory granules was mostly related to the Golgi-area which is located on both nuclear poles of auricular myoendocrine cells. The results confirm that cardiodilatin is stored in secretory granules observed through electron microscopical means. This hormone is most likely synthesized and released in myoendocrine cells, exerting its important cardiovascular effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318996
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  • 116
    Electronic Resource
    Electronic Resource
    An immunohistochemical study of somatostatin and neurotensin positive neurons in the septal nuclei of the rat brain (1984)
    Springer
    Anatomy and embryology 170 (1984), S. 1-10 
    Details
    ISSN: 1432-0568
    Keywords: Somatostatin ; Neurotensin ; Immunohistochemistry ; Septum ; Basal forebrain ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Antibodies to the neuropeptides somatostatin (SOM) and neurotensin were used to study the distribution of the two peptides within the septum of the rat brain. In colchicine treated rats, numerous somatostatin-positive cell bodies were found in the dorsal and ventral subdivisions of the alteral septum, along the border of the nucleus accumbens, in the ventral tip of the horizontal limb of the diagonal band of Broca as well as in the anterior hippocampal rudiment, infralimbic area and several other structures of the basal forebrain (e.g., nucleus accumbens, olfactory tubercle and substantia innominata). Cell bodies containing immunoreactivity for neurotensin were situated in the intermediate and ventral subdivisions of the lateral septum, the medial septal nucleus, the diagonal band of Broca, the rostro-medial continuation of the substantia innominata and the olfactory tubercle. In untreated rats, somatostatin positive processes formed terminal plexuses in the medial septal nucleus and along an area close to the ventricular wall of the lateral ceptal nucleus. Other septal nuclei, such as the diagonal band of Broca contained a sparse innervation by somatostatin positive fibers. In contrast, the nucleus accumbens olfactory tubercle, and the substantia innominata contained a rich innervation by somatostatin positive axons and terminals. Within these structures the density of SOM positive processes show great variations with patches of densely packed terminals separated by areas of sparser or no innervation. The neurotensin positive terminals were situated predominantly within the intermediate part of the lateral septum and the medial septal nucleus. Both of these regions contained numerous pericellular baskets of neurotensin positive terminals around septal neurons. In addition to the septal innervation, several of the basal forebrain structures were rich in neurotensin positive processes with the densest innervation found in the nucleus accumbens and substantia innominata. Like the SOM-immunoreactivity distinct islands of dense neurotensin innervation separated by less or no innervation occur throughout the basal forebrain. Taken together, these findings suggest that somatostatin and neurotensin occur in separate neuronal populations and that each may influence important physiological functions within the individual septal nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00319452
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  • 117
    Electronic Resource
    Electronic Resource
    Sexual differences in the topographical distribution of serotonergic fibers in the anterior column of rat lumbar spinal cord (1984)
    Springer
    Anatomy and embryology 170 (1984), S. 117-121 
    Details
    ISSN: 1432-0568
    Keywords: Sexual dimorphism ; Serotonin fibers ; Lumbar cord ; Cremaster ; Immunohistochemistry ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Sexual dimorphism in the topographical organization of immunoreactive serotonergic fibers has been shown for the first time in the anterior column of the rat lumbar cord. A characteristic preferential arrangement of serotonergic fibers on the small cell column composed of anterior horn motoneurons, which have been proved to send their axons to the cremaster muscle, was demonstrated at the lumbar segments (L1–L2) of male rats, using the immunoperoxidase technique with antiserum against serotonin. A similar finding was also observed in female rats, but was less prominent than in males. Comparative analysis of the cell numbers and the size of neuronal somata of the aforementioned nucleus, done using retrograde transport of fluorescent dye (DAPI) via axonal fibers coursing down the genitofemoral nerve to the cremaster muscle, gave significantly larger values in males. The sexual difference in the serotonergic innervation pattern was, in consequence, surmised to be caused by the cytoarchitectonic contrast ascertained in the lumbar anterior column. Furthermore, there may be a striated muscle endowed with some active functions homologous to those of the male cremaster muscle in the female rat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318995
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  • 118
    Electronic Resource
    Electronic Resource
    Immunohistochemical localization of neurofilament protein in neuronal degenerations (1984)
    Springer
    Acta neuropathologica 64 (1984), S. 30-36 
    Details
    ISSN: 1432-0533
    Keywords: Neurofilament ; Neuronal degeneration ; Neurofibrillary changes ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The immunohistochemical localization of human neurofilament proteins was studied in a variety of neuronal changes by the peroxidase-antiperoxidase method using antisera raised against each of the subunit proteins of human neurofilament. Torpedoes of the cerebellum, axonal spheroids of amyotrophic lateral sclerosis as well as of infantile neuroaxonal dystrophy, and neurofibrillary changes in a case of Pick's disease were consistently immunostained. Occasionally, a positive immunoreactivity was also observed in Lewy bodies, in neurofibrillary tangles of progressive supranuclear palsy, and in neuritic processes of senile plaques. Neurofibrillary tangles of Alzheimer type and Pick's bodies, however, did not react with the antisera. These data indicate that the human neurofilament doesnot share major antigenic determinants of its subunit protein with either Alzheimer's neurofibrillary tangles or Pick's bodies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695603
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  • 119
    Electronic Resource
    Electronic Resource
    Systemic amyloid myopathy — Light-microscopic and fine-structural study of the skeletal muscles with histochemical and immunohistochemical study of amyloid (1984)
    Springer
    Acta neuropathologica 64 (1984), S. 114-121 
    Details
    ISSN: 1432-0533
    Keywords: Amyloid myopathy ; Skeletal muscle ; Histology ; Immunohistochemistry ; Fine structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Studies were made on skeletal muscles obtained by biopsy and autopsy from a 59-year-old man with immunocyte dyscrasia and amyloidosis; he had progressive muscular stiffness with palpable tumors and ϰ-type Bence-Jones protein, but no overt myeloma. Histologically, much amyloid was seen deposited preferentially in the skeletal muscles, especially in the endo- and perimysia, forming tumors of various sizes and occasionally associating influx of amyloid into some muscle fibers, and in the smaller-sized blood vessel walls, frequently associated with extreme narrowing or occlusion of their lumina. Most muscle fibers were replaced by much amyloid or showed extensive atrophy, having a characteristic circular space under the endomysium, which was concluded to be not due to compression atrophy but to ischemic atrophy. Ischemic neuropathy was observed and seemed to be responsible for the diffuse atrophy without spaces seen exceptionally in some parts. Amyloid was shown histochemically to contain AL as the major protein component, immunohistochemically to have a close relation with ϰ-type light chain, and fine-structurally to be formed just outside the basement membrane of the blood vessels and deposited in the endo- and perimysia through perivascular infiltration. The clinicopathologic features of nine similar autopsy cases in the literature were compared with those in the present case. The causes of damage in muscle fibers and of preferential deposition of amyloid in the skeletal muscles were discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695574
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    Immunohistochemical localization of extravasated serum albumin in the hippocampus of human subjects with partial and generalized epilepsies and epileptiform convulsions (1984)
    Springer
    Acta neuropathologica 65 (1984), S. 25-34 
    Details
    ISSN: 1432-0533
    Keywords: Blood-brain barrier ; Immunohistochemistry ; Astrocyte ; Epilepsy ; Hippocampus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Human serum albumin-like immunoreactivity was detected by the peroxidase-antiperoxidase method in histological sections of the hippocampus from epileptic and control brains obtained on routine autopsies. In the hippocampi of epileptic patients immunoreactive astrocytes were found, the number of which was increasing with the severity of the manifest convulsions. The highest numbers of immunoreactive astrocytes were observed in those patients who died in status epilepticus. Hippocampi from control patients with no neurologic disorders in life were devoid of immunoreactive astrocytes. The results are discussed in terms of the breakdown of the blood-brain barrier during epileptic seizures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00689824
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    Immunohistochemistry of folliculo-stellate cells in normal human adenohypophyses and in pituitary adenomas (1984)
    Springer
    Acta neuropathologica 65 (1984), S. 35-40 
    Details
    ISSN: 1432-0533
    Keywords: Immunohistochemistry ; Folliculo-stellate cells ; Pituitary gland ; Pituitary adenoma ; S-100 protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Presence and distribution of S-100 protein (S-100), neuron-specific enolase (NSE), cytokeratin polypeptides, glial fibrillary acidic protein (GFAP), vimentin, actin, lysozyme and pituitary hormones (prolactin, hGH, ACTH, β-FSH, β-LH, β-TSH, alpha subunit) in folliculo-stellate cells (FSC) were studied in seven normal human pituitary glands and 28 pituitary adenomas using peroxidase-antiperoxidase and the avidin-biotin immunohistochemical techniques. Approximately 5% of the cells of the adenohypophysis were agranular, non-hormon-producing FSC most of which showed a conspicuous and strong reaction with S-100 antibodies but some were, in addition, GFAP- and vimentin-positive. In contrast to endocrine cells (EC), FSC were not decorated by antibodies to NSE or cytokeratins. In addition to supportive functions, these cells, due to their close special relationship to EC, seem to have transport and other metabolic functions yet to be elucidated. By their S-100 reactivity and their distribution FSC are comparable to glial cells of the central and schwann and satellite cells of the peripheral nervous system (PNS) as well as to supportive cells in neuroendocrine organs and related tumors (e.g., pheochromocytomas, paragangliomas, carcinoids). With one exception, S-100 reactive FSC were not found in pituitary adenomas. The immunohistochemical demonstration of S-100 protein in pituitary tissue is, therefore, a reliable aid in the discrimination between adenomas and normal pituitary tissue, particularly in small and poorly preserved specimens. In one adenoma FSC were found in addition to ACTH-producing tumor cells. This seems to be an extremely rare event suggesting a combination tumor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00689825
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  • 122
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    Endocrine cells in extrahepatic bile duct carcinoma (1984)
    Springer
    Journal of cancer research and clinical oncology 108 (1984), S. 331-335 
    Details
    ISSN: 1432-1335
    Keywords: Extrahepatic bile duct ; Carcinoma ; Endocrine cell ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A total of 44 extrahepatic bile duct carcinomas comprising 13 well-differentiated adenocarcinomas, 25 moderately differentiated adenocarcinomas, and 6 poorly differentiated adenocarcinomas were examined histologically and immunohistochemically for somatostatin, gastrin, and glicentin. Argyrophil cells, argentaffin cells, and somatostatin- and gastrin-immunoreactive cells within the tumor were detected in 46.2%, 15.4%, 23.1%, and 15.4% of well-differentiated adenocarcinomas, and in 16.0%, 8.0%, 12.0%, and 4.0% of moderately differentiated adenocarcinomas, respectively. No tumor tissues of poorly differentiated adenocarcinomas contained endocrine cells. A statistically significant difference in the frequency of argyrophil cells was observed between well and poorly differentiated adenocarcinoma. The incidence of argyrophil cells and somatostatin-immunoreactive cells in nonneoplastic mucosa adjacent to well-differentiated adenocarcinoma was higher than in that adjacent to poorly differentiated adenocarcinoma. Glicentin-immunoreactive cells could not be demonstrated either in tumor tissue or in nonneoplastic mucosa of the extrahepatic bile duct. With reference to the histogenesis of extrahepatic bile duct carcinoma, it was assumed from these results that the development of well-differentiated adenocarcinoma might be closely related to the occurrence of endocrine cells and that poorly differentiated adenocarcinoma might develop from ordinary mucosa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00390467
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  • 123
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    Reduced substance P-like immunoreactivity in hereditary sensory neuropathy of Pointer dogs (1984)
    Springer
    Acta neuropathologica 63 (1984), S. 33-40 
    Details
    ISSN: 1432-0533
    Keywords: Hereditary sensory neuropathy ; Substance P ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two unrelated Pointer dogs, each from a breeding of normal parents which produced three affected pups in a litter of nine, began to bite their paws at 3 and 5 months of age. Insensitivity to painful stimuli was marked in the distal parts of the limbs and receded proximally. The affected dogs were euthanatized at 5 and 20 months because of acral mutilation and infection. Changes affecting the primary sensory neurons included: small spinal ganglia with reduced numbers of cell bodies, degeneration of unmyelinated and myelinated fibers in dorsal roots and peripheral nerves, and reduced fiber density in the dorsolateral fasciculus (dlf). Since nociceptive loss was the salient deficit in a neuropathy affecting primary sensory neurons, immunohistochemical studies focused on substance P, the undecapeptide imputed to mediate nociception at the first synapse in the spinal cord and brain. The localization and density of substance P-like (SPL) immunoreactivity was studied in three control dogs and the two Pointers by the indirect antibody peroxidase-antiperoxidase method. The spinal intumescences of the control dogs contained dense SPL-immuno-reactivity in fibers of the dlf and the superficial laminae of the dorsal horn (i.e., laminae I, II, and the dorsal part of III). Immunoreactive fascicles on the lateral aspect of the dorsal horn and in the reticular process sent contributions medially to a plexiform fiber arrangement in lamina V. Medially, SPL-immunoreactive fibers were more loosely arranged in the internal third of laminae VI and VII and in lamina X. In the Pointers, the loss of primary sensory neurons was associated with notable reduction of SPL staining in the dlf and superficial laminae of the dorsal horn. In the lumbar intumescence of the older Pointer greater preservation of SPL staining in the lateral third of laminae I and II was consistent with somatotopic termination of trunkal afferents in this region. In both Pointers there was no detectable decrease in trigeminal sensitivity and the SPL immunoreactivity in the spinal nucleus of the trigeminal nerve of the younger Pointer and the corresponding control dog appeared equivalent. In the older Pointer, however, the immunoreactivity in this nucleus was decreased relative to the control. This decrease and appearance of scattered fiber degeneration in the dorsal columns of the mature Pointer suggested that fiber degeneration progresses slowly with age to include sensory systems not affected in early postnatal life. The findings in the Pointers were compared with those made in immunohistochemical studies of SP in familial dysautonomia and the mutilated foot rat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688468
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    The structure of pseudomeissnerian corpuscles (1984)
    Springer
    Acta neuropathologica 63 (1984), S. 174-176 
    Details
    ISSN: 1432-0533
    Keywords: Pseudomeissnerian corpuscles ; Neurofibroma ; Giant nevus ; Immunohistochemistry ; S-100 protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Immunohistochemical staining for S-100 protein was carried out on one case of von Recklinghausen's neurofibroma and one of giant congenital nevus. Uniformly positive staining was ootained in all cells of the numerous pseudomeissnerian corpuscles in both cases. These structures thus appear, like the true Wagner-Meissner tactile nerve endings, to consist entirely of Schwann cells and not to contain any demonstrable perineurial component.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697200
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    Borna disease of horses (1984)
    Springer
    Acta neuropathologica 64 (1984), S. 213-221 
    Details
    ISSN: 1432-0533
    Keywords: Encephalitis ; Borna disease virus ; Immunohistochemistry ; Axonal transport ; Cytoplasmic filaments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The brains of eight horses that had suffered from natural Borna disease were examined with virologic, immunohistological, and electron-microscopic methods. All brains harbored infectious virus as shown by inoculation of experimental animals. Regional assessment of the infectivity exhibited the highest titers in the hippocampus and piriform cortex and the lowest in the cerebellum. Coventional histology yielded pathologic alterations very similar to those of the classical description of the disease. Immunohistology demonstrated the highest amounts of Borna disease virusspecific antigen in the nuclei of neurons. In the perikarya, dendrites, and axons smaller amounts of antigen were found. A comparison of the antigen distribution with the inflammatory reaction established a high concordance of these two parameters. The presence of virus-specific antigen seems to trigger the exsudation of inflammatory cells, which reflect the extension of the infectious process. Heavy inflammatory exsudates in the white matter underlying diseased cortical areas can be explained by the axonal presence of virus-specific antigen. Virus particles could not be demonstrated with the electron microscope. The most significant findings at the ultrastructural level were stacks of fine filaments, adhering closely to cytoplasmic cisterns. These structures might be related to virus components or might be involved in virus morphogenesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688111
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    Amyloid-like (Congophilic) neurofibrillary tangles do not react with neurofilament antisera in Alzheimer's cerebral cortex (1984)
    Springer
    Acta neuropathologica 64 (1984), S. 243-250 
    Details
    ISSN: 1432-0533
    Keywords: Neurofibrillary tangles ; Paired helical filaments ; Amyloid-like ; Neurofilaments ; Alzheimer's disease ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The immunohistological properties of Alzheimer's neurofibrillary tangles (NFT) were studied by immunofluorescence with neurofilament (NF) antisera and with antiserum raised to paired helical filaments (PHF) in NFT preparations, brain smears, and cryostat sections. NFT decorated by NF antisera were Congo red-negative. Conversely, PHF antisera stained Congo red-positive NFT but failed to decorate NF-positive NFT. It is concluded that NF do not cross react with typical NFT, i.e., NFT displaying amyloid-like birefringence, under the conditions reported in this study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688115
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    GFAP, FVIII/RAg, Laminin, and fibronectin in gliosarcomas: An immunohistochemical study (1984)
    Springer
    Acta neuropathologica 63 (1984), S. 108-116 
    Details
    ISSN: 1432-0533
    Keywords: Gliosarcoma ; Immunohistochemistry ; GFAP ; Factor VIII/RAg ; Laminin ; Fibronectin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary GFAP, Factor VIII/RAg, laminin, and fibronectin were immunohistochemically investigated in 15 glioblastomas and 15 gliosarcomas. GFAP was found variably positive in the glial areas. F VIII/RAg characterizes the endothelial cells and in gliosarcomas suggests the origin of the sarcomatous component from the endothelial proliferations. Laminin separates the two components and characterizes the inner and the outer basement membranes in the vessels. It is multiplied and thickened in endothelial proliferations, while it is often fragmented in the larger vessel wall proliferations. Our observations confirm that gliosarcoma represents the last stage of a process which starts with the endothelial hyperplasia of glioblastoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697192
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    Immunohistochemical demonstration of serotonin-containing nerve fibers in the hypothalamus of the monkey, Macaca fuscata (1984)
    Springer
    Cell & tissue research 236 (1984), S. 495-503 
    Details
    ISSN: 1432-0878
    Keywords: Hypothalamus ; Serotonin ; Neuroendocrine regulation ; Monkey (Macaca fuscata) ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The distributional pattern of serotonin-containing nerve fibers in the hypothalamus of the monkey (Macaca fuscata) was analyzed with the use of the peroxidaseantiperoxidase method in conjunction with a highly sensitive and specific anti-serotonin serum. The highest concentrations of serotonin-immunoreactive varicose fibers were found in the nucleus praeopticus medialis, nucleus ventromedialis hypothalami, and the complex of mammillary nuclei (nucleus praemamillaris, supramamillaris, mamillaris medialis et lateralis). However, the nucleus suprachiasmaticus, where numerous serotoninergic fibers have been reported to occur in the rat, appeared to be almost devoid of these fibers. The infundibular stalk, and the intermediate and posterior lobes of the pituitary contained considerable numbers of immunoreactive fibers. The present study provides a morphological basis for possible clarification of the influence of serotoninergic projections on various neuroendocrine mechanisms in primates. Furthermore, an attempt was made to clarify the differences and similarities concerning the distributional patterns of serotoninergic nerve fibers within the monkey hypothalamus in contrast to the rat hypothalamus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217216
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    Sustentacular cells in the fetal human adrenal medulla are immunoreactive with antibodies to brain S-100 protein (1984)
    Springer
    Cell & tissue research 236 (1984), S. 733-735 
    Details
    ISSN: 1432-0878
    Keywords: S-100 protein ; Adrenal medulla ; Sustentacular cells ; Human fetus ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Adrenal glands of human fetuses were investigated by means of an immunohistochemical method with the use of an anti-S-100 serum. S-100-immunoreactivity was recognized in sustentacular cells located among the chromaffin cells. A characteristic circular arrangement of the immunostained cells was found in the central region of the adrenal glands. It surrounded aggregations of non-argyrophilic, small, round cells, which were identified as the remaining sympathoblasts (primitive sympathetic cells).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217246
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    Mitotic activity of prolactin cells in the pituitary glands of male and female rats of different ages (1984)
    Springer
    Cell & tissue research 235 (1984), S. 497-502 
    Details
    ISSN: 1432-0878
    Keywords: Prolactin cell ; Mitosis ; Sex difference ; Aging ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The anterior pituitary of colchicine-pretreated male and female rats from 20 days to 12 months of age was stained immunohistochemically with anti-rat prolactin serum. Immunoreactive mitotic cells were identified in all groups of rats. In adult female rats the mitotic index of prolactin cells was higher at oestrus than at other stages of the oestrus cycle and than that in male rats of comparable ages. If adult female rats were ovariectomized on the second day of dioestrus or on the day of proestrus, the mitotic indices at presumptive oestrus were less than those in sham-operated controls at oestrus. Estrogen administration to ovariectomized rats significantly elevated the mitotic index of prolactin cells at 48 h after the treatment. The mitotic indices of prolactin cells in female rats reached a peak at 60 days of age, and then decreased with age. In male rats the mitotic indices showed a steady decrease from the value at 20 days of age. A sex difference in the mitotic indices of prolactin cells was noted from 60 days to 12 months of age. The present results clearly demonstrate that differentiated prolactin cells can undergo mitosis and that a sex difference in the mitotic activity of prolactin cells is present during adult life.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226945
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    Immunohistochemical study on the morphology of enterochromaffin cells in the human fundic mucosa (1984)
    Springer
    Cell & tissue research 235 (1984), S. 703-705 
    Details
    ISSN: 1432-0878
    Keywords: Enterochromaffin cells ; Serotonin ; Immunohistochemistry ; Man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The morphology of enterochromaffin (EC) cells in the human fundic mucosa was investigated at the lightmicroscopic level by means of the unlabeled peroxidase anti-peroxidase method, with the use of a highly specific anti-serotonin serum. EC-cells in the human fundic mucosa were sparsely distributed below the neck portion of the gland, but were found to be rather numerous in its lower half. Immunohistochemistry revealed marked pleomorphic and seemingly polynuclear EC-cells or cells with long, sometimes multipolar cytoplasmic processes. In addition, luminal contacts and contiguity between EC-cells, or interglandular connections were also encountered. The present immunohistochemical procedure permits, for the first time, a clear-cut morphological visualization of the entire population of EC-cells, and reveals the distinctive morphological features of these cells in the human fundic mucosa. These morphological findings imply that EC-cells in the fundic mucosa may be crucial in gastric function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226973
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    Serotonin and opsin immunoreactivities in the developing pineal organ of the three-spined stickleback, Gasterosteus aculeatus L. (1984)
    Springer
    Cell & tissue research 237 (1984), S. 559-564 
    Details
    ISSN: 1432-0878
    Keywords: Pineal complex (pineal and parapineal organs) ; Development, ontogenetic ; Photoreceptor cells ; Immunohistochemistry ; Serotonin (5-HT) ; Opsin ; Teleost (Gasterosteus aculeatus)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 5-hydroxytryptamine (5-HT, serotonin)- and opsin-immunoreactive sites were studied in the developing pineal complex of the stickleback, Gasterosteus aculeatus L., by use of light-microscopic indirect immunoperoxidase techniques. 5-HT immunoreactivity first occurs in the pineal organ at the age of 80 h after fertilization and appears to be localized in cells of the photoreceptor type. The outer segments of a few pineal photosensory cells exhibit opsin immunoreactivity at the age of 84 h after fertilization. The number of cells seems to increase until the pineal organ is completely developed. The increase in the number of 5-HT immunoreactive perikarya runs parallel in time to that of the opsinimmunoreactive outer segments. The cells of the parapineal organ show neither opsin nor 5-HT immunoreactivity. The retina of the embryonic stickleback does not display opsin immunoreactivity until after hatching, which takes place about 144 h after fertilization. These results suggest, in the three-spined stickleback, an earlier light-perception capacity for the developing pineal organ than for the retina.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00228440
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    Purification and immunohistology of a glycoprotein secreted from the rabbit uterus before implantation (1984)
    Springer
    Cell & tissue research 237 (1984), S. 155-160 
    Details
    ISSN: 1432-0878
    Keywords: Uterine epithelium ; Uterine proteins ; β-Glycoprotein ; Immunohistochemistry ; Rabbit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Two antigens of the β-glycoprotein fraction from rabbit uterine secretion of the seventh day post coitum were purified firstly by gel filtration on Sephadex G 150, then either by ion exchange chromatography on DEAE Sephacel or chromatofocusing on PBE 94. By the use of a specific antiserum, raised in female sheep, two antigens with α 2- and β 2-mobility in agar gel electrophoresis could be demonstrated. Immunohistochemical staining of the uterine epithelium at the seventh and eighth day post coitum showed the antigens to be localized in a ciliated cell type of conspicuous shape, which is supposed to be the site of synthesis. Stain accumulated mainly in the apical part of the cell, but there were also small deposits around the nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00229211
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    Catecholamine-containing pancreatic islet cells of the domestic fowl (1984)
    Springer
    Cell & tissue research 237 (1984), S. 239-244 
    Details
    ISSN: 1432-0878
    Keywords: Islet A cell ; Catecholamine ; Combined microscopy ; Immunohistochemistry ; Fowl
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In an attempt to identify pancreatic islet cells emitting formaldehyde-induced fluorescence (FIF), the pancreatic islets of the domestic fowl were studied by combined fluorescence, ultrastructural, silver-impregnation and immunohistochemical methods in the same section or in consecutive semi-thin and ultra-thin sections. The results indicate that islet cells emitting intense FIF exhibit a strongly argyrophil reaction with the Grimelius' silver method and also immunohistochemical reaction with anti-glucagon serum, but not with anti-5-HT serum. Therefore, the fowl islet A cell, a peptide hormone-producing cell, stores simultaneously catecholamine as biogenic amine. The islet B and D cells did not display any FIF, any argyrophil reaction with the Grimelius' silver method, or any immunoreactivity with anti-glucagon or anti-5-HT sera. The fluorescent but non-argyrophil cells dispersed in the exocrine acinus may well be PP cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217141
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    Ontogeny of endocrine cells in the gut of the insect Periplaneta americana (1984)
    Springer
    Cell & tissue research 238 (1984), S. 421-423 
    Details
    ISSN: 1432-0878
    Keywords: Gut endocrine cells ; Ontogeny ; Immunohistochemistry ; Pancreatic polypeptide ; Insect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The ontogeny of the endocrine cells of the gut of the cockroach Periplaneta americana was studied by immunohistochemistry. During embryogenesis, the midgut begins to be formed as an outgrowth of the foregut and hindgut invaginations. Gut endocrine cells with pancreatic polypeptide (PP)-like immunoreactivity begin to appear at the anterior and posterior ends of the forming midgut. These cells are restricted to the midgut epithelium, and no mitotic cells with PP-like immunoreactivity are observed. These results strongly suggest that the gut endocrine cells, at least those with PP-like immunoreactivity, are derived from precursor cells they have in common with other epithelial cells of the midgut.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217318
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    The auricular myocardiocytes of the heart constitute an endocrine organ characterization of a porcine cardiac peptide hormone, cardiodilatin-126 (1984)
    Springer
    Cell & tissue research 238 (1984), S. 425-430 
    Details
    ISSN: 1432-0878
    Keywords: Heart, atrium ; Myoendocrine cells ; Cardiodilatin ; Peptide hormone ; Immunohistochemistry ; Pig
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A peptide hormone was extracted from the porcine right atrium following a bioassay for differential vaso-relaxant effects on smooth muscle strips from aorta and renal and inferior mesenteric arteries. The isolation procedure included several steps of gel-permeation and ion-exchange chromatography, and high performance liquid chromatography. During the isolation procedure, other peptides of smaller molecular weight were also found, which, in relation to cardiodilatin-126 (CDD-126), are shorter at their N-terminal. Among these, CDD-88 has also been isolated and characterizied, and has been established as a prominent member of the cardiac hormone family. The N-terminal and C-terminal segments of the 126 amino acid-containing molecule were synthesized and used to raise region-specific antibodies. The natural peptide was then localized within myoendocrine cells of the right atrium where specific atrial granules are located. Renal effects of cardiodilation were studied in conscious dogs and showed strong diuretic and natriuretic activities. According to our functional studies, cardiodilatin-126 and cardiodilatin-88 possess qualities of a significant hormone family regarding the regulation of extracellular fluid volume and blood pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00219856
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    Coordination Complexes of Some Group(IV) Halides with Monodentate Schiff Bases (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 187-190 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Komplexe von Halogeniden der IV. Gruppe mit einzähnigen Schiffschen BasenVerschiedene Komplexe, die bei der Reaktion von N-(phenyl)benzalaldimin und seinen Derivaten mit einer Methylgruppe in verschiedenen Positionen des Anilinringes mit Halogeniden der IV. Gruppe, MX4, (M = Si bzw. Sn und X = Cl bzw. Br) entstehen, wurden hergestellt und mittels UV-, IR- und Raman-Spektren charakterisiert.
    Notes: Coordination compounds resulting from the interaction of N-(phenyl)benzalaldimine and its derivatives containing a methyl group in different positions of the aniline ring and group(IV) halides, MX4 (where M = Si or Sn and X = Cl or Br), have been prepared and characterized by elemental analyses and electronic, infrared and Raman spectra.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845080126
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    Neue Beobachtungen zum chemischen Transport von GeO2. V. Zur Mineralisatorwirkung von Na-Verbindungen auf den Modifikationswechsel von GeO2 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 208-208 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845080130
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    Beiträge zur Chemie des Phosphors. 134. Über die Triphosphane H(t-BuP)3H, Li(t-BuP)3Li und Me3Si(t-BuP)3SiMe3 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 38-52 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Phosphorus. 134. On the Triphosphanes H(t-BuP)3H' Li(t-BuP)3Li, and Me3Si(t-BuP)3SiMe3The reaction of 1,3-diiodo-1,2,3-tri-tert-butyltriphosphane, I(t-BuP)3I, with lithium aluminium hydride leads to 1,2,3-tri-tert-butyltriphosphane, H(t-BuP)3H (1). 1 reacts with n-butyllithium to 1,3-dilithium-1,2,3-tri-tert-butyltriphosphide, Li(t-BuP)3Li (2), which reacts further with trimethylchlorosilane yielding 1,3-bis(trimethylsilyl)-1,2,3-tri-tert-butyltriphosphane, Me3Si(t-BuP)3SiMe3 (3). The triphosphanes 1, 2 and 3 could be isolated in a pure state. In solution 1 forms the threo, threo and the threo,erythro configurated diastereomers 1a and 1b in a ratio of about 2:1. 3 predominantly exists in form of the threo,erythro configurated diastereomer 3b by steric reasons.
    Notes: Die Umsetzung von 1,3-Diiod-1,2,3-tri-tert-butyltriphosphan, I(t-BuP)3I, mit Lithiumaluminiumhydrid führt zu 1,2,3-Tri-tert-butyltriphosphan, H(t-BuP)3H (1). 1 reagiert mit n-Butyllithium zu 1,3-Dilithium-1,2,3-tri-tert-butyltriphosphid, Li(t-BuP)3Li (2), das mit Trimethylchlorsilan weiter zu 1,3-Bis(trimethylsilyl)-1,2,3-tri-tert-butyltriphosphan, Me3Si(t-BuP)3SiMe3 (3), umgesetzt werden kann. Die Triphosphane 1, 2 und 3 konnten in reiner Form isoliert werden. In Lösung bildet 1 die threo, threo- und threo,erythro-konfigurierten Diastereomere 1 a und 1 b im Verhältnis von etwa 2:1. 3 liegt aus sterischen Gründen hauptsächlich in Form des threo, erythro-konfigurierten Diastereomers 3 b vor.
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    URL: http://dx.doi.org/10.1002/zaac.19845090204
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  • 140
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    Oxydationsprodukte intermetallischer Phasen. III. Tieftemperaturformen von K2Sn2O3 und Rb2Sn2O3 und eine Notiz über K2Ge2O3 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 145-152 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Oxidation Products of Intermetallic Compounds. III. Low Temperature Forms of K2Sn2O3 and Rb2Sn2O3 and a Notice about K2Ge2O3By controlled oxidation of KSn (at 320°C) and RbSn (at 410°C) with O2 the hitherto unknown low temperature forms of K2Sn2O3 (a = 8.4100(8) Å) and Rb2Sn2O3 (a = 8.6368(8) Å) are obtained, which are isotopic with cubic K2Pb2O3. Oxidation at higher temperatures (at 510-5207°C) leads to the well-known HT-forms. The Madelung Part of Lattic Energie, MAPLE, is calculated for both compounds.K2Pb2O3, Rb2Pb2O3, Cs2Pb2O3, and Cs2Sn2O3 have been prepared too by oxidation of KPb, RbPb, CsPb, and CsSn.Oxidation of KGe (at 400°C) leads to the first oxogermanate(II), K2Ge2O3 (cubic a = 8.339(1) Å, isotypic with K2Pb2O3) together with K6Ge2O7.
    Notes: Aus KSn bzw. RbSn entstehen durch direkte Oxydation K2Sn2O3 bzw. Rb2Sn2O3 bei 320°C bzw. 410°C die bislang unbekannten „Tieftemperaturformen“ (a = 8,4100(8)Å bzw. a = 8,6368(8)Å), isotyp mit kubischem K2Pb2O3. Bei höherer Temperatur (510 bzw. 520°C) entstehen die bekannten Hochtemperaturformen.Der Madelunganteil der Gitterenergie, MAPLE, wird berechnet und diskutiert.Ebenso erhält man durch direkte Oxydation von KPb, RbPb, CsPb und CsSn die Oxide K2Pb2O3, Rb2Pb2O3, Cs2Pb2O3 und Cs2Sn2O3. Durch Oxydation von KGe wurde bei 400°C erstmals K2Ge2O3 (kubisch a = 8,339(1) Å; isotyp mit K2Pb2O3) neben K6Ge2O7 erhalten.
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    URL: http://dx.doi.org/10.1002/zaac.19845090215
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  • 141
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    The Reaction of SnCl2 with Br2 and I2 in Weak Donor Solvents (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 174-182 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Reaktion des SnCl2 mit Br2 und I2 in schwachen Donor-LösungsmittelnEs wurden die Verbindungen SnCl2Br2(MeCN)2, “Sn3Cl8Br4(THF)6” und “Sn3Cl10Br2(OEt)6” durch Reaktion zwischen SnCl2 und Br2 in Acetonitril (MeCN), Tetrahydrofuran (THF) und Diethylether (OEt2) gewonnen. Die zwei letzten Verbindungen sind feste Lösungen von SnCl4L2 und SnCl2Br2L2 (L = THF, OEt2) jeweils im Verhältnis 1:2 und 2:1. Die Verbindungen wurden mit Hilfe von IR-, Raman- und Mößbauer-Spektroskopie charakterisiert. Es wurde C1-Symmetrie für SnCl2Br2(MeCN)2 und C2v mit den Liganden in trans-Position für SnCl2Br2L2 (L = THF, OEt2) gefunden. Das bisher nicht bekannte Mößbauer-Spektrum des SnBr4(THF)2 wurde gemessen und ebenfalls die Reaktion zwischen SnCl2 und I2 in denselben Lösungsmitteln studiert. Die Bildung des SnCl4L2 (L = MeCN, THF, OEt2) SnI4 und einer kleinen Menge des SnI3Cl wurde beobachtet und Raman-spektroskopisch identifiziert.
    Notes: The compounds SnCl2Br2(MeCN)2, “Sn3Cl8Br4(THF)6”, and “Sn3Cl10Br2(OEt2)6” were obtained by reaction between SnCl2 and Br2 in acetonitrile (MeCN), tetrahydrofuran (THF) and diethyl ether (OEt2). The two last are solid solutions of SnCl4L2 and SnCl2Br2L2 (L = THF, OEt2) in the proportions 1:2 and 2:1, respectively. The compounds are characterized by IR, Raman, and Mössbauer spectroscopy, a C1 symmetry being found for SnCl2Br2 (MeCN)2 together with a C2v symmetry, with the ligands in trans positions, for SnCl2Br2L2 (L = THF, OEt2). The Mössbauer spectrum of SnBr4(THF)2 was also obtained, which has not previously been reported. The reaction between SnCl2 and I2 has also been studied in the same solvents, and the formation of SnCl4L2 (L = MeCN, THF, OEt2), SnI4, and a small amount of SnI3Cl was observed, which have been identified by Raman spectroscopy.
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    URL: http://dx.doi.org/10.1002/zaac.19845090219
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  • 142
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    Cobalt(II) Complexes of 4,6-Dimethylpyrimidine-2(1H)-one (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 192-200 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Einige Cobalt(II)-Komplexe von 4,6-Dimethylpyrimidin-2(1H)-on (HL) wurden dargestellt und mittels IR- und Elektronenspektren magnetochemisch und konduktometrisch untersucht. Der Ligand wird über das nicht protonierte N-Ringatom angelagert und in einem Fall auch über das O-Atom der Carbonylgruppe. Die “blauen” Komplexe [CoX2 · 2HL] (X2 = Cl2, CBr, Br2, (NCS)2) und [CoX2 · 2HL] · 2HL (X = Cl, Br) haben eine verzerrte C2v-Anordnung [CoX2N2]; die Thiocyanate sind über die N-Atome an das Metall gebunden. Die „grünen“ Komplexe CoX2 · 2HL (X = Cl(4H2O), Br) besitzen eine quadratisch-pyramidale Anordnung [CoX2N2O]. Die „rosa“ Komplexe CoX2 · 4HL · nH2O (X = ClO4, n = 2, X = BF4, n = 8, CF3CO2, n = 4) und die „cremefarbigen“ CoX2 · 4HL · 6H2O (X = J, ClO4) zeigen oktaedrische Anordnung; nur CF3CO2- ist koordiniert. Die „veilchenfarbenen“ Komplexe CoAcL · 2HL · 2H2O und Co3Ac4L2 · 2HL · 2H2O haben eine mehrkernige Struktur; das Acetation betätigt sich als zweizähniger Ligand.
    Abstract: CoII-Komplexe von 4,6-Dimethylpyrimidin-2(1H)-on
    Notes: Some cobalt(II) complexes of 4,6-dimethylpyrimidine-2(1H)-one (HL) have been prepared and studied by infrared and electronic spectra and by magneto-chemical and conductometric measurements. The ligand is coordinated through the unprotonated ring-nitrogen atom and in one case also through the carbonylic oxygen atom. The “blue” complexes [CoX2 · 2HL] (X2 = Cl2, ClBr, Br2, (NCS)2) and [CoX2 · 2HL] · 2HL (X = Cl, Br) have a distorted C2v [CoX2N2] coordination; the thiocyanate ion is N-bonded to the metal. The “green” complexes CoX2 · 2HL (X = Cl(4H2O), Br) have a square-pyramidal [CoX2N2O] coordination. The “pink” CoX2 · 4HL · nH2O (X = ClO4, n = 2; X = BF4, n = 8; X = F3Ac, n = 4) and “cream” CoX2 · 4HL · 6 H2O (X = I, ClO4) complexes have an octahedral coordination; only the F3Ac- ion is coordinated. The “cyclamen” CoAcL · 2HL · 2 H2O and Co3Ac4L2 · 2HL · 2H2O complexes have a polynuclear constitution; the Ac- ion behaves as bidentate ligand.
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    URL: http://dx.doi.org/10.1002/zaac.19845090221
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    Raman-spektroskopische Untersuchungen an koordinationspolymeren Metall-tricyanmethaniden M[C(CN)3]2 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 31-36 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Raman Spectroscopic Investigations of Coordination Polymeric Metal TricyanmethanidesThe Raman spectra of 3d-metal tricyanmethanides M{C(CN)3}2 as well as of [Ni{C(CN)3}2py2] are investigated. The observed Raman lines are assigned, characteristic variations of position and intensity of these lines are discussed.
    Notes: Es werden die Ramanspektren der koordinationspolymeren 3d-Metalltricyanmethanide M{C(CN)3}2 (M = Mn, Fe, Co, Ni, Zn) sowie von [Ni{C(CN)3}2py2] untersucht. Die beobachteten Ramanlinien werden zugeordnet, charakteristische Variationen der Lage und Intensität dieser Linien werden diskutiert.
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    URL: http://dx.doi.org/10.1002/zaac.19845100306
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    Zur Chemie und Strukturchemie der Phosphide und Polyphosphide. 34 [1] Dampfdruckuntersuchungen am System Europium-Phosphor (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 51-60 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemistry and Structural Chemistry of Phosphides and Polyphosphides. 34. Vapor Pressure Measurements in the Europium-Phosphorus SystemThe vapor pressure of the europium phosphides EuP7, α-EuP3, ß-EuP3, EuP2 and Eu3P4 were measured using the Knudsen-Effusion technique. These compounds were vaporized incongruently according to the general reaction a EuPm, (s) = a EuPn, (s) + P4, (g) where a (m - n) = 4. The following enthalpies and entropies of reaction were calculated (δH)kJ · mol-1/δS (J · K-1 mol-1)/ T(K). [δH/δS/T]: EuP7 → ß-EuP3 [191/215/698]; α-EuP3 → EuP2 [212/162/847]; ß-EuP3 → EuP2 [261/212/847]; EuP2 → Eu3P4 [209/144/868]; Eu3P4 → EuP [240/131/1110]. The temperature and pressure ranges over which these phosphides exist were determined from the above values. Standard enthalpies of formation relative to EuP(s) were calculated by combining different reaction enthalpies. The results demonstrate the relatively high stability of ß-EuP3, EuP7 and the instability of EuP2.
    Notes: Für die Europiumphosphide EuP7, α-EuP3, ß-EuP3, EuP2 und Eu3P4 wurden die Dampfdrucke der inkongruenten Verdampfungsreaktionen a EuPm, (f) = a EuPn, (f) + P4, (g) mit a(m - n) = 4 mit der Knudsen-Methode gemessen. Zur Abspaltung von einem Mol P4,(g) wurden bei den mittleren Temperaturen T(K) die folgenden Reaktionsenthalpien δH(kJ · mol-1) und Reaktionsentropien δS(J · K-1 · mol-1) erhalten: [δH/δS/T]: EuP7 β ß-EuP3 [191/215/698]; α-EuP3 → EuP2 [212/162/847]; ß-EuP3 → EuP2 [261/212/847]; EuP2 → Eu3P4 (209/144/868); Eu3P4 → EuP [240/131/1110]. Hierdurch wurden die Existenzfelder der verschiedenen Europiumphosphide in Abhängigkeit von Druck und Temperatur festgelegt. Durch Kombination der verschiedenen Reaktionsenthalpien werden die Standardbildungsenthalpien der Phosphide relativ zu EuP berechnet. Sie zeigen die hohe Stabilität von ß-EuP3 und EuP7 sowie die Instabilität von EuP2.
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    URL: http://dx.doi.org/10.1002/zaac.19845100309
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    Synthese und Kristallstruktur von (PPh4)2[Mo2Cl10] (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 86-92 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of (PPh4)2[Mo2Cl10]The title compound is obtained in the reaction of [MoCl4(Ph—C≡C—Ph)]2 with tetraphenylphosphonium chloride in dichloro methane, forming brown crystals. It is characterized by the i.r. spectrum and a crystal structure analysis by the aid of X-ray diffraction data. The complex crystallizes triclinic in the space group P1 with one formula unit per unit cell. The cell dimensions are a = 1122 pm, b = 1137 pm, c = 1283 pm; α = 63.4°, β = 69.1°, γ = 86.5°. The crystal structure determination (2959 observed, independent reflexions, R = 4.5%) shows the constants of the unit cell to consist of on centrosymmetric anion, two cations and one disordered molecule of dichloro methane. The distance Mo—Mo in the anion is 380 pm, which excludes direct magnetic interaction between the molybdenum atoms.
    Notes: Die Titelverbindung entsteht in Form brauner Kristalle durch Umsetzung von [MoCl4(Ph—C≡C—Ph)]2 mit Tetraphenylphosphoniumchlorid in Dichlormethan; sie wird durch das IR-Spektrum und durch eine Kristallstrukturbestimmung charakterisiert. Der Komplex kristallisiert triklin in der Raumgruppe P1 mit einer Formeleinheit pro Elementarzelle. Die Zellparameter betragen a = 1122 pm, b = 1137 pm, c = 1283 pm, α = 63,4°, β = 69,1°, γ = 86,5°. Die röntgenographische Kristallstrukturbestimmung (2959 beobachtete, unabhängige Reflexe, R = 4,5%) zeigt, daß die Struktur aus zentrosymmetrischen, dimeren Anionen, isolierten Kationen, und einem fehlgeordneten Molekül Dichlormethan pro Elementarzelle besteht. Der Mo—Mo-Abstand im Anion beträgt 380 pm, was eine direkte magnetische Wechselwirkung zwischen den Mo-Atomen ausschließt.
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    URL: http://dx.doi.org/10.1002/zaac.19845080113
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    Synthese und Röntgenstrukturanalyse von Tris(diethyldithiocarbamato) dimethylphenylphosphantechnetium(III), einem Technetium-Komplex mit der Koordinationszahl 7 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 117-122 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Crystal and Molecular Structure of Tris(diethyldithiocarbamato)dimethylphenylphosphinetechnetium (III)The title compound Tc(S2CNEt2)3(Me2PhP) I has been prepared by the reaction of TcCl3(Me2PhP)3 with NaS2CNEt2. The crystal structure of I has been determined by single-crystal X-ray diffraction methods at room temperature. Crystals are rhombic, space group P212121, with a = 8.708(1), b = 12.012(1), c = 29.626(3) Å and Z = 4. The compound consists of discrete I molecules. The technetium atom has a seven-coordinated environment which is best described as a distorted pentagonal bipyramid. The Tc - P distance (2.330(3) Å) is remarkably short compared with other technetium complexes with mono-dentate phosphine ligands.
    Notes: Die Titelverbindung Tc(S2CNEt2)3(Me2PhP) I wurde durch Reaktion von TcCl3(Me2PhP)3 mit NaS2CNEt2 dargestellt und ihre Kristall- und Molekülstruktur durch Röntgenstrukturanalyse ermittelt. Die Kristalle sind rhombisch, Raumgruppe P212121, mit a = 8,708(1), b = 12,012(1), c = 29,626(3) Å und Z = 4. Die Verbindung besteht aus diskreten monomeren Molekülen. Das Technetiumatom hat siebenfache Koordination, die am besten als geringfügig verzerrte pentagonale Bipyramide beschrieben werden kann. Die Tc - P-Bindungslänge (2,330(3) Å) ist bemerkenswert kurz im Vergleich zu anderen Technetiumkomplexverbindungen mit einzähnigen Phosphanen.
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    Ein Beitrag zur Struktur geschmolzener Mischungen aus Alkalimetall- und Erdalkalimetallhalogeniden, dargestellt an ihren thermodynamischen Eigenschaften (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 152-162 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thermodynamics and Structure of Molten Mixtures Alkali Halide-Alkaline Earth HalideThermodynamic quantities ai, fi, GE, and SE were calculated on the basis of vapour pressures of molten mixtures of the type alkali halide-alkaline earth halide. Negative deviations from ideality were found in all systems. The influence of cations or anions on the properties of mixtures is discussed. There is a good correlation between GE and the change of polarization energy δEp. Strong ionic interactions were found in molten mixtures, especially in the system RbBr - CaBr2. The existence of stable complex ions in melts could not be shown by Raman spectroscopy.
    Notes: Aus den Dampfdrücken der geschmolzenen Mischungen vom Typ Alkalimetallhalogenid-Erdalkalimetallhalogenid wurden die thermodynamischen Daten ai, fi, GE sowie Orientierungswerte für SE berechnet. In allen Systemen treten z. T. beträchtliche negative Abweichungen von der Idealität auf. An ausgewählten Beispielen wird der Einfluß der Kationen bzw. Anionen auf die Mischungseigenschaften diskutiert. Für die GE-Werte ergibt sich eine gute Korrelation mit der Änderung der Polarisationsenergie δEp. Ramanspektroskopische Untersuchungen konnten die Existenz stabiler komplexer Ionen nicht belegen, weisen aber besonders bei den Mischungen RbBr - CaBr2 auf starke interionische Wechselwirkungen hin.
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    URL: http://dx.doi.org/10.1002/zaac.19845100321
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    Solid-State Equilibria in the MoO3 - TeO2 - Al2O3 System (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 189-193 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die binären und ternären Gleichgewichte im System MoO3 - TeO2 - Al2O3 wurden rötgenographisch untersucht. Bei 750°C in Luft wurden in diesem System die im Abstract angegebenen koexistierenden Bereiche gefunden. Eine Bildung ternärer Verbindungen konnten im untersuchten Temperaturbereich (450 - 750°C) nicht beobachtet werden.
    Notes: The binary and ternary equilibrium reactions of Al2O3 with TeO2 and MoO3 were studied by X-ray diffraction methods and the following compatibility ranges were determined in the TeO2 - MoO3 - Al2O3 system at 750°C in air: TeO2, Te2MoO7, Al2TeO6; Te2MoO7, MoO3, Al2TeO6; MoO3, Al2(MoO4)3, Al2TeO6; Al2(MoO4)3, Al2O3, Al2TeO6. Ternary compound formation was not observed in the temperature range investigated (450 - 750°C).Phasengleichgewichte im System MoO3 - TeO2 - Al2O3.
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    URL: http://dx.doi.org/10.1002/zaac.19845100326
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    NMR-spektroskopische Untersuchungen an 15N-markierten N-Phosphorylphosphazenen und Imidodiphosphorsäure-DerivatenProfessor Hans-Albert Lehmann zum 65. Geburtstage am 1. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 7-18 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N.M.R. Spectroscopic Studies of 15N Labelled N-Phosphorylphosphazenes and Imidodiphosphoric Acid Derivatives15N labelled compounds were prepared and investigated by means of 31P- and 15N-NMR spectroscopy. The chemical shift values δP and δN, and the coupling constants 1JPN and 2JPP are discussed and interpreted qualitatively by semiempirical quantumchemical calculations (CNDO/2) using POPLE'S ΔE-model.
    Notes: 15N-markierte Verbindungen der Substitutionsreihen wurden synthetisiert und mit Hilfe der 31P- und 15N-NMR-Spektroskopie untersucht. Die chemischen Verschiebungen δP und δN sowie die Kopplungskonstanten 1JPN und 2JPP werden diskutiert und qualitativ mit Hilfe halbempirischer quantenchemischer Rechnungen (CNDO/2) im Rahmen des POPLE-schen ΔE-Modells interpretiert.
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    URL: http://dx.doi.org/10.1002/zaac.19845110402
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    Zur Umsetzung des Zweikomponentensystems Triethylphosphit/Tetrachlorkohlenstoff mit wasserstoffhaltigen Nucleophilen 1. Die Reaktion mit SäureamidenProfessor Hans-Albert Lehmann zum 65. Geburtstage am 1. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 51-56 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of the Two-component System Triethylphosphite/Carbon Tetrachloride with Nucleophiles Containing Hydrogen. 1. Reaction with Acyl AmidesAcyl amides react with the two-component system triethylphosphite/carbon tetrachloride yielding N-acyl phosphazenes, (EtO)3P=N—Ac. In this way (EtO)3P=N—P(O)(OEt)2, (EtO)3P=N—CN, (EtO)3P=N—C(O)Ph, and (EtO)3P=N—SO2Ph were prepared. Ethyl esters of phosphoric acid and trichloromethane phosphonic acid were obtained as by-products.
    Notes: Säureamide reagieren mit dem Zweikomponentensystem Triethylphosphat/Tetrachlorkohlenstoff zu N-Acylphosphazenen, (EtO)3P=N—Ac. Auf diese Weise wurden aus entsprechenden Amiden (EtO)3P=N—P(O)(OEt)2, (EtO)3P=N—CN, (EtO)3P=N—C(O)Ph und (EtO)3P=N—SO2Ph dargestellt. Als Nebenprodukte werden Phosphorsäureethylester und Trichlormethanphosphonsäureester erhalten.
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    Diskrete polynukleare Metall-Komplexe aus Polysulfid-Lösungen: [Cu6S17]2-, ein ungewöhnlicher binärer CuI-Komplex mit verschiedenen bemerkenswerten strukturellen Eigenschaften (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 84-88 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Discrete Polynuclear Metal Complexes from Polysulfide Solutions: [Cu6S17]2-, a Novel Binary Polynuclear CuI Complex with Several Remarkable Structural FeaturesThe complex [Cu6S17]2-, obtained from Cu(acac)2 and an ethanolic polysulfide solution, contains an unusual arrangement of the metal atoms and novel types of ligand coordination, particularly of polysulfido (S42- and S52-) ions. The relevance of the synthesis with respect to the “dilemma of transporting metals together with sulfur” for the process of metal sulfide rock formation is evidenced. (PPh4)2[Cu6S17] crystallizes in the space group C2/c with Z = 4 (for further details see Inhaltsübersicht).
    Notes: Der Komplex [Cu6S17]2-, der als Tetraphenylphosphonium-Salz (1) aus Cu(acac)2 und einer ethanolischen Polysulfidlösung erhalten wurde, zeigt eine ungewöhnliche Anordnung der Metall-Atome und eine neuartige Koordination von Polysulfidoliganden (S42- und S52-). Auf die Relevanz der Synthese bezüglich der Problematik der Entstehung von Metall-Sulfid-Mineralien wird hingewiesen. 1 kristallisiert monoklin in der Raumgruppe C2/c mit Z = 4 (Gitterdimensionen a = 20,270(7), b = 11,605(5), c = 26,331(9) Å, β = 109,68(4)°).
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    URL: http://dx.doi.org/10.1002/zaac.19845110410
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  • 152
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    Bildung siliciumorganischer Verbindungen. 97. Über den Einfluß der Si-Substituenten (Me, Cl) auf Bildung und Reaktion von Yliden (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 108-131 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation of Organosilicon Compounds. 97. About the Influence of the Si-Substituents (Me, Cl) upon the Formation and the Reactions of Ylides1,3-disilapropanes with different grade of chlorination or methylation at the silicon atoms and containing a CCl2 group cleave the Si—P bond of Me3SiPMe2. By subsequent rearrangement ylides with = PMe2Cl group are formed. The reactivity of the CCl2 group depends on the grade of Si-chlorination resp. Si-methylation. Si-methylation decreases the reactivity of the CCl2 group. The reaction of 1,3-disilapropanes and Me3SiPMe2 (molar ratio 1:1) runs in a sequence shown in “Inhaltsübersicht”. Ylid C is able either to react with the initial compound A forming B, or in competition decomposes forming D. Reacting Si-perchlorinated carbosilanes, the decomposition forming D is not to be observed. In Si-methylated ylides like (Me3Si)2C=PMe2—PMe2 and (Me3Si)2C=PMe2—P(Me)SiMe3 the ylid carbon atom is able to abstract a proton of the P—CH3 group resp. P—H groups of the trivalent phosphorus forming (Me3Si)2C(H)PMe2. The rearrangement is proved by deuterated derivatives. The different behaviour is due to the increased basicity of the ylid-C atom in Si-methylated phosphorus ylides. Quite the same behaviour show the phosphorus ylides of 1,3,5-trisilacyclohexane.
    Notes: Die am Si-Atom unterschiedlich chlorierten und methylierten 1,3-Disilapropane mit der CCl2-Gruppe ermöglichen die Spaltung von Me3Si—PMe2 unter Bildung der P-halogenierten Phosphorylide, wobei mit steigendem Methylierungsgrad die Reaktivität abnimmt. Die Umsetzungen verlaufen in folgender Reaktionsfolge: Das Ylid C kann mit der nicht umgesetzten Ausgangsverbindung A zu B zurückreagieren oder es zersetzt sich in einer Konkurrenzreaktion zu D. Bei Si-chlorierten Yliden wird die Bildung von D nicht beobachtet. In Si-methylierten Yliden wie (Me3Si)2C=PMe2—PMe2 und (Me3Si)2C=PMe2—P(Me)SiMe3 vermag das Ylid-C-Atom ein H-Atom aus der P—CH3-Gruppe oder der PH-Gruppe des dreibindigen Phosphors zu abstrahieren unter Bildung von (Me3Si)2C(H)PMe2. Die Umlagerung wird anhand deuterierter Derivate belegt. Das unterschiedliche Verhalten wird auf die erhöhte Basizität des Ylid-C-Atoms in den Si-methylierten Phosphoryliden zurückgeführt. Ganz entsprechend verhalten sich die Phosphorylide 1,3,5-Trisilacyclohexans.
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    Polymorphie von SrTa2O6 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 176-184 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polymorphism of SrTa2O6Orthorhombic SrTa2O6 is a new low temperature modification related to orthorhombic CaTa2O6. SrTa2O6(orh.) was obtained when the wellknown modification SrTa2O6(TTB) which is related to the tetragonal tungsten bronzes was heated in the presence of a transporting agent (chlorine) or a mineralizer (melt of B2O3) at temperatures below 1150°C. It could be prepared by the reaction of a 1:1 mixture of Sr(NO3)2 or SrCO3 with Ta2O5 in a sealed quartz glass tube as well. SrTa2O6(orh.) also occurred as an intermediate phase of the reaction of the corresponding 1:2 mixture at temperatures below 900°C (e. g. 840°C). Indexing of Guinier powder patterns led to the following unit cell: a = 11.006 Å, b = 7.638 Å, c = 5.622 Å. At temperatures above 1220°C SrTa2O6(orh.) changes (in air) to SrTa2O6(TTB). A reversal of this transition could not be achieved without the presence of a mineralizer or a transporting agent. CaxSr1-xTa2O6 solid solutions of the low temperature form could not definitely be established. However, at 1300°C solid TTB solutions of CaxSr1-xTa2O6 were formed. For x 〉 0.05 the TTB unit cells are orthorhombically distorted. For x ≥ 0.85 the x-ray powder patterns of the solid solutions looked like the one of CaTa2O6(orh.) and no TTB-structure was observed at 1300°C.
    Notes: Von SrTa2O6 wurde eine neue, mit orthorhombischem CaTa2O6 strukturverwandte Tieftemperatur-Modifikation erhalten. SrTa2O6(orh.) ließ sich bei Temperaturen unter 1150°C sowohl aus der bisher bekannten, den tetragonalen Wolframbronzen verwandten Modifikation SrTa2O6(TWB) in Gegenwart eines Transportmittels (Chlor) bzw. eines Mineralisators (B2O3-Schmelze), wie auch durch Umsetzen von Gemengen (1:1) aus SrCO3 oder Sr(NO3)2 und Ta2O5 in geschlossenen Quarzglasampullen erhalten. Auch als Zwischenprodukt der Umsetzung entsprechender 1:2-Gemenge bei Temperaturen unter 900°C (z. B. 840°C) tritt diese Modifikation auf. Die Gitterkonstanten von SrTa2O6(orh.) sind aufgrund von Pulverdaten: a = 11,006 Å, b = 7,638 Å, c = 5,622 Å. Beim Erhitzen auf etwa 1 220°C (an der Luft) wandelt sich SrTa2O6(orh.) in SrTa2O6(TWB) um. Eine Rückumwandlung von SrTa2O6(TWB) in SrTa2O6(orh.) ohne Mineralisator- oder Transportmittelzusatz war nicht zu erreichen. Mischkristalle CaxSr1-xTa2O6 der Tieftemperaturform ließen sich nicht sicher nachweisen. Die bei Mischkristallen mit 0,05 〈 x ≤ 0,20 (1300°C) vorliegende TWB-Struktur ist orthorhombisch verzerrt. CaTa2O6(orh.) zeigte dagegen ab x ≥ 0,85 (1300°C) keine Entmischung.
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  • 154
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    Darstellung, Isolierung und Charakterisierung gemischter Thiocyanato(1,3-diaminopropan)chrom(III)-Komplexe (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 167-173 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation, Isolation, and Characterization of Mixed Thiocyanato(1.3-diaminopropane) -chromium(III) ComplexesThe complexes [Cr(NCS)4dap]- and trans-[Cr(NCS)2(dap)2]+ (dap = 1.3-diaminopropane) are prepared for the first time, isolated as salts and characterized by CHN analysis, chromium contents, the electrophoretic behaviour in dimethylformamide, and by UV, VIS, and IR spectra.
    Notes: Die Komplexe [Cr(NCS)4dap]- und trans-[Cr(NCS)2(dap)2]+ (dap = 1,3-Diaminopropan) werden erstmals dargestellt, als Salze isoliert und durch CHN-Analyse, Chrombestimmung, elektrophoretisches Verhalten in Dimethylformamid sowie Spektren im UV, VIS und IR charakterisiert.
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    URL: http://dx.doi.org/10.1002/zaac.19845090218
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  • 155
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    Sulphur-Nitrogen Chelating Agents. IV. Some Solid State Copper(II) Complexes of Thia-aminopyridines An I.R. and Reflectance Spectral Analysis (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 201-208 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Schwefel-Stickstoff-Chelatbildner. IV. Einige Kupfer(II)-Komplexe von Thioaminopyridinen. IR- und ReflexionsspektroskopieEine Reihe von CuII-Komplexen sind dargestellt und charakterisiert worden. Die angenommenen Strukturen beruhen auf ihren IR -und VIS-Spektren. Die Thioaminopyridine können in verschiedener Weise koordiniert sein. Im Gegensatz zu unseren Befunden an aliphatischen Thioaminen ergab sich kein Zusammenhang zwischen der Struktur der CuLX2-Verbindungen und der Art des X--Anions. Ein Hinweis auf die Struktur der CuL2+-Komplexe in wäßriger Lösung kann aus festem CuLX2 nicht erhalten werden.
    Notes: A series of solid state CuII complexes with thia-aminopyridines . S(CH2)mNH2 have been prepared and characterized. The postulated structures of these CuLX2 (X = OAc-, NO3-, ClO4- or Cl-) compounds were based on their I.R. and electronic spectra. It was found that the thiaaminopyridines may coordinate in quite different ways. In contrast with what was found for the aliphatic thiadiamines, no relation was stated between the structure of the CuLX2 compounds and the nature of the X- anion.Moreover the solid state compounds do not give a clear indication for the structure of the CuL2+ species in aqueous solution.
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    URL: http://dx.doi.org/10.1002/zaac.19845090222
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  • 156
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    Thermochemical Properties and Vapor Growth of Hg1-xCdx Te on CdTe (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 199-207 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thermochemische Eigenschaften und Aufwachsen von Hg1-xCdxTe auf CdTeNach thermodynamischen Rechnungen enthält die Gasphase des epitaktischen Hg1-xCdxTe - HgI2 - CdTe Systems vorwiegend Hg(g) und HgI2(g) durch die andere Moleküle vom Ausgangsstoff zum CdTe Substrat wandern. Transportversuche im Temperaturgradienten 590° → 535°C zeigten, daß man dünne Schichten von Hg1-xCdxTe auf CdTe von einem ternären Ausgangsmaterial in Gegenwart von HgI2 erhält.
    Notes: Based on a thermodynamic analysis, the vapor phase of the Hg1-xCdxTe - HgI2 - CdTe epitaxy system consists predominantly of Hg(g) and HgI2(g) through which nutrient species migrate from the source to the CdTe substrate. Growth experiments in the 590° → 535°C temperature gradient showed that Hg1-xCdxTe layers can be grown on CdTe substrates using a preannealed, ternary source material in the presence of HgI2.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845100328
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  • 157
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    Chemischer Transport der Nickelsulfide und einige Zusammenhänge beim Transport komplexer Bodenkörper am Beispiel der Sulfide von Fe, Co, NiProfessor Hans Albert Lehmann zum 65. Geburtstage am 1. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 19-32 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemical Transport Reactions of Ni-Sulfides and Some Relationships in C.T.R. of Complex Solids in the Case of Sulfides of Fe, Co, NiCrystals of α-Ni3S2, NiS, and NiS2 as well as solid solutions Fe1-yNiySx were grown by C.T.R. The coexistence equilibrium pressure of the solution equilibrium pressure p(S2), the activity of the metal component, the stability of gaseous metal halides concerning decomposition as well as their stability related on the transport agent have to be taken into account to choose a suitable transport agent, which have a sometimes opposite influence on the transport behaviour. Halogenes, hydrogen halides, and GeI2 were used as transport medium.
    Notes: Durch chemische Transportreaktionen wurden Kristalle der Phasen α-Ni3S2, NiS und NiS2 sowie Mischkristalle Fe1-yNiySx erhalten. Bei der Auswahl des Transportmittels sind der Koexistenzzersetzungsdruck bzw. Löslichkeitsdruck p(S2) und die Metallaktivität im Bodenkörper, die Stabilität der gasförmigen Metallhalogenide bezüglich Zerfall und ihre Stabilität relativ zum Transportmittel zu beachten, die z. T. gegenläufigen Einfluß haben. Geeignete Transportmittel sind Halogene, Halogenwasserstoffe und GeI2.
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    URL: http://dx.doi.org/10.1002/zaac.19845110403
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    Zum chemischen Transport von Zinkoxid und zur Bestimmung seiner PhasenbreiteProfessor Hans-Albert Lehmann zum 65. Geburtstage am 1. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 57-71 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemical Transport of Zinc Oxide and the Estimation of its Phase WidthThe chemical transport behaviour of zinc oxide using different transport agents and the influence of the transport conditions (T, ΔT, p) on transport rate and deposition form was studied. The range of homogeneity of ZnO is very narrow. The best agents for deposition of ZnO with the upper phase boundary are Cl2 and Br2, for the deposition of the lower phase boundary HBr and NH4Br are more suitable. The deviation from stoichiometry depends on the deposition temperature and amounts to 10 till 250 ppm in the range of 1073 up to 1373 K.
    Notes: Das chemische Transportverhalten von Zinkoxid mit Cl2, Br2, HCl, HBr, NH4Cl und NH4Br und der Einfluß der Transportbedingungen (T, ΔT, p) auf die Abscheidungsgeschwindigkeit und Abscheidungsform wurde studiert. ZnO weist ein sehr schmales Homogenitätsgebiet auf. Zur Abscheidung von ZnO der oberen Phasengrenzzusammensetzung sind Cl2 und Br2 am besten geeignet. Für die Abscheidung von ZnO der unteren Phasengrenzzusammensetzung sind am besten HBr und NH4Br geeignet. Die Abweichung von der Stöchiometrie hängt von der Präparationstemperatur der Kristalle ab und liegt zwischen 10 und 250 ppm im Temperaturbereich 1073 bis 1373 K.
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  • 159
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    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. XXXVIII. Reaktion von Dibenzylmangan mit Sauerstoff (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 89-94 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. XXXVIII. Reactions of Dibenzyl Manganese with Oxygene(C6H5CH2)2Mn · C4H8O2 reacts with oxygen forming an unstable deep violet compound which changes in a stable unsoluble yellow peroxide of the formula C6H5CH2MnO—OMnCH2C6 H5. With excess oxygen a polynuclear complex of 3 valent manganese is formed with the composition Mn4O4(OH)4(OCHC6H5)2.The compounds isolated were characterized by the products of hydrolyses and thermolyses, anaerobic reaction with iodine, magnetic moments, i.r. and e.s.r. spectra.
    Notes: Dibenzylmangan-1,4-dioxan reagiert mit Sauerstoff zu einer tiefvioletten instabilen Substanz. Diese wandelt sich in ein stabiles gelbes, schwerlösliches Peroxid der Formel C6H5CH2MnO—OMnCH2C6H5 um. Mit überschüssigem Sauerstoff entsteht daraus ein Mehrkernkomplex des 3wertigen Mangans der Zusammensetzung Mn4O4(OH)4(OCHC6H5)2.Die isolierten Verbindungen wurden durch ihre Hydrolyse- und Thermolyseprodukte, anaerobe Iodierung, magnetischen Momente sowie IR- und ESR-Spektren näher charakterisiert.
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    Masthead (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984) 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845080101
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  • 161
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    Darstellung und Struktur von Antimon(III)-tris(thiophosphinaten) (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 19-25 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Structure of Antimony (III) Tris (thiophosphinates)The title compounds are formed by the reaction of Sb(CH3COO)3 with thiophosphinic acids R2P(=S)OH (R = CH3 cyclo-C6H11, C6H5). The crystal and molecular structures of Sb((cyclo-C6H11)2POS)3 and Sb((C6H5)2POS)3 have been determined by single crystal X-ray methods. SbIII is pyramidally coordinated to the oxygen atoms of the R2POS ligands through short (primary) bonds with a mean length of 203 pm. The Sb—S distances of the mainly chelating ligands vary between 300 and 320 pm (secondary bonds). The lone electron pair is stereochemically active.
    Notes: Die Umsetzung von Sb(CH3COO)3 mit Thiophosphinsäuren R2P(=S)OH (R = CH3, cyclo-C6H11, C6H5) führt zu Verbindungen der Formel Sb(R2POS)3. Die Strukturen der Verbindungen mit R = cyclo-C6H11 und C6H5 wurden an Einkristallen röntgenographisch bestimmt. SbIII ist über kurze (primäre) Bindungen mit der mittleren Länge von 203 pm pyramidal an die Sauerstoffatome der R2POS-Liganden gebunden. Die Sb—S-Abstände (sekundäre Bindungen) sind ungefähr 320 pm lang. Das freie Elektronenpaar ist stereochemisch aktiv.
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    URL: http://dx.doi.org/10.1002/zaac.19845080104
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    Schwingungs- und massenspektroskopische Untersuchungen an α,ω-Dihydrochlorsilanen H(SiCl2)nH mit n = 3-7 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 43-49 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: I.R. and Mass Spectroscopic Investigations on α,ω-Dihydrochloro Silanes H(SiCl2)nH with n = 3-7Mass spectra of α,ω-dihydrochlorosilanes H(SiCl2)nH were analyzed respecting to their fragmentation. This shows, that the cleavage starts with the break of SiSi bonds, by preference in the middle of the chain. This is in accordance to the results of IR spectra which show very similar frequencies like perchlorooligo silanes. Thus, the lowest force constants of SiSi bondings in α,ω-dihydrochloro silanes, can be also expected in the middle of the chain.
    Notes: Die Massenspektren der α,ω-Dihydrochlorsilane H(SiCl2)nH mit n = 3-7 werden bezüglich ihrer Fragmentierung analysiert. Es zeigt sich, daß die Spaltung mit einem Zerbrechen der SiSi-Bindung, vorzugsweise in der Mitte der Kette beginnt. Dies steht im Einklang mit den Ergebnissen der IR-Spektren, die sehr ähnliche Frequenzen zeigen, wie bei den Perchlorsilanen gefunden. Daraus kann geschlossen werden, daß auch bei den α,ω-Dihydrochlorsilanen die mittleren SiSi-Bindungen die kleinsten Kraftkonstanten zeigen.
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    URL: http://dx.doi.org/10.1002/zaac.19845080107
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    Röntgenographische Phasenbestimmungen zur thermischen Dissoziation und das Hydrolyseverhalten von Alkalihexafluorogermanaten bei höheren TemperaturenProfessor Günther Rienäcker zum 80. Geburtstage am 13. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 512 (1984), S. 48-58 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Phase Determinations by X-rays on the Thermal Dissociation and the Hydrolysis of Alkali Hexafluorogermanates at Higher TemperaturesFor a better understanding of the thermal dissociation of alcaline hexafluorosilicates investigations have been done on hexafluorogermanates. In these systems the formation of new phases has been studied by x-rays in dependence of temperature. Thermal behaviour of the substances strongly depends on the starting structure. Phase transformations taking place at lower temperatures are strongly determine the reaction at higher temperature. Therefore, we found differences to the analogous thermal reactions of hexafluorosilicates.There is a high sensitivity to hydrolysis of hexafluorogermanates above 600°C. We discuss the difference in reaction of thin powder layers and of powder samples in the volume.
    Notes: Zum besseren Verständnis des thermischen Verhaltens von Alkalihexafluorosilicaten wurden Vergleiche mit analogen Germanium-Verbindungen angestellt. Die Phasenneubildung wurde als Funktion der Temperatur röntgenographisch untersucht. Es ergab sich eine starke Abhängigkeit des thermischen Verhaltens von der Ausgangsstruktur. Phasentransformationen, die bei niederen Temperaturen ablaufen, beeinflussen bei höherer Temperatur das Reaktionsgeschehen (thermische Vorgeschichte der Substanz). Deshalb resultieren gegenüber den Hexafluorosilicaten differierende Reaktionsabläufe. Durch Heizguinieraufnahmen unter getrocknetem, strömendem Inertgas wurde die enorme Hydrolysenempfindlichkeit der Hexafluorogermanate oberhalb 600°C bewiesen.Das unterschiedliche Verhalten von dünnen Pulverschichten und kompakten Pulverproben wird diskutiert.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845120507
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    Bildung siliciumorganischer Verbindungen. 99. Zur Trennung von Carbosilan- und Silylphosphan-Gemischen mit Hilfe der HochdruckflüssigkeitschromatographieProfessor Günther Rienäcker zum 80. Geburtstage am 13. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 512 (1984), S. 93-102 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation of Organosilicon Compounds. 99. Separation of Carbosilane and Silylphosphane Mixtures by Means of HPLCTest mixtures of Si-methylated carbosilanes were separated by means of reversedphase HPLC (nucleosil 5-C18; CH3OH:hexane = 90:10). The corresponding SiCl-containing mixtures were successfully separated only after reductin of the SiCl groups by means of LiAlH4 (CH3OH: C6H6 + H2O = 92.5:7.5 + 4 - 8%). A model separation of the silylphosphanes Me3SiPH2, (Me3Si)2PH and (Me3Si)3P using the same material but acetonitrile: toluene = 85:15 is also reported.
    Notes: Testgemische Si-methylierter Carbosilane werden mit reversed-phase HPLC getrennt (Nucleosil 5-C18; CH3OH:Hexan = 90:10). Die Auftrennung entsprechender SiCl-haltiger Verbindungen gelingt nach Reduktion der SiCl-Gruppen mit LiAlH4 (CH3OH: C6H6 + H2O = 92,5: 7,5 + 4 - 8%). Über die Modelltrennung der Silylphosphane Me3SiPH2, ((Me3Si)2)2PH und (Me3Si)3P unter Verwendung des gleichen Säulenmaterials, jedoch mit dem Eluens Acetonitril: Toluol = 85:15, wird ebenfalls berichtet.
    Additional Material: 5 Ill.
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  • 165
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    Zur Reaktivität von intramolekular basenstabilisierten Zinn(II)-Verbindungen mit Halogenen, Zinntetrachlorid und Chloroform (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 512 (1984), S. 177-180 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactivity of Intramolecular Basestabilized Tin(II) Compounds with Halogens, Tin Tetrachloride, and TrichloromethaneIntramolecular basestabilized tin(II) compounds of the type RN(CH2CH2Y)2Sn (Y = O, S and R = Me, t-Bu) react with halogens, tin tetrachloride, and trichloromethan at room temperature by oxydative addition reaction to tin(IV) derivatives. These compounds are characterized by n.m.r. investigations and by Mössbauer studies.
    Notes: Intramolekular basenstabilisierte Zinn(II)-Verbindungen des Typs RN(CH2CH2Y)2Sn (Y = O, S und R = Me, t-Bu) reagieren bei Raumtemperatur mit Halogenen, Zinntetrachlorid und Chloroform im Sinne von oxydativen Additionsreaktionen zu Zinn(IV)-Derivaten. Diese Derivate werden durch NMR-Untersuchungen und durch Mößbauerstudien charakterisiert.
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    URL: http://dx.doi.org/10.1002/zaac.19845120519
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  • 166
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    Über Chalkogenolate. 137. Isothiocyano-, Isothiocyanomonothio- und Isothiocyanodithio- ameisensäurealkylester (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 512 (1984), S. 231-239 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 137. Alkyl Esters of Isothiocyanoformic, Isothiocyanomonothioformic and Isothiocyanodithioformic AcidsThe esters RO—CO—NCS, where R = CH3, C2H5, as well as RS—CO—NCS and RS—CS—NCS with R = C2H5, nC3H7 have been prepared by three different methods. The reaction between the corresponding chloro compound and KSCN in the presence of the phase transfer catalyst 18-crown-6 gives the highest yields.The electron absorption, infrared, nuclear magnetic resonance, and mass spectra of these compounds are reported.
    Notes: Die Ester RO—CO—NCS mit R = CH3, C2H5 sowie RS—CO—NCS und RS—CS—NCS mit R = C2H5, nC3H7 wurden nach drei verschiedenen Verfahren hergestellt, wobei die Umsetzung der entsprechenden Chloroverbindung mit KSCN in Gegenwart des Phasentransferkatalysators 18-Krone-6 die besten Ausbeuten erbringt.Die Elektronenabsorptions-, Infrarot-, kernmagnetische Resonanz- und Massenspektren der Verbindungen werden mitgeteilt.
    Additional Material: 8 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19845120524
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  • 167
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    Komplexbildung und Extraktion von Molybdän(VI) mit zweizähnigen Liganden (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 191-196 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Coordination and Extraction of Molybdenum(VI) with Bidentate LigandsA series of bidentate ligands as well as their thio derivatives from the groups of 8-quinolinols, β-diketones, acylpyrazolones, and N-acyl-phenylhydroxylamines was studied for the ability to extract molybdenum(VI) from heptamolybdate. The extraction principally runs only in acidic medium, sulfur-containing extractants having no advantage. The composition of the complexes was determined by the isolation of compounds in the solid state and also by the interpretation of distribution data.
    Notes: Eine Reihe zweizähniger Liganden sowie entsprechende Thioderivate aus den Gruppen der 8-Hydroxychinoline, β-Diketone, Acylpyrazolone und N-Acyl-phenylhydroxylamine wurde auf ihr Extraktionsvermögen für Molybdän aus Heptamolybdat geprüft. Die Extraktion ist grundsätzlich nur im sauren Bereich möglich, schwefelhaltige Extraktionsmittel bringen keine Vorteile. Die Komplexzusammensetzung wurde durch Isolierung von Komplexen in Substanz und durch Auswertung der Verteilungsdaten ermittelt.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845080127
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    Beiträge zur Chemie der Silicium-Schwefel-Verbindungen. XXIX. 29Si-NMR-Untersuchungen (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 201-207 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Silicon-Sulphur Compounds. XXIX. 29Si-N.M.R. InvestigationsThree series of silicon-sulphur compounds (RO)3SiSR′ (I), (i-PrO)4-nSi(SEt)n (II) and cyclic Si—S compounds (III) were prepared, some of them at the first time and their 29Si-N.M.R. spectra were measured. In the series of trialkoxysilylthio derivatives (I) were the steric and inductive effects of the RO and R'S groups evaluated. In the series II were the 29Si-N.M.R. chemical shifts related to the relative paramagnetic screening constants σ* and netto charge at the silicon atom q(Si) using the EN-quantum-chemical model discussed. In the series III were the shift contribution of the (SiS)2 and 1-sila-2,5-dithiacyclopentan rings determined.
    Notes: Drei Reihen von Silicium-Schwefel-Verbindungen: (RO)3SiSR'(I), (i-PrO)4-nSi(SEt)n (II) und cyclische Si—S-Verbindungen (III) wurden dargestellt, davon einige erstmalig, und ihre 29Si-NMR-Spektren vermessen. In der Reihe der Trialkoxysilylthio-Derivate (I) wurden die sterischen und induktiven Wirkungen der RO- und R'S-Gruppen abgeschätzt. In der Reihe II wurden die 29Si-NMR-chemischen Verschiebungen in Abhängigkeit von den relativen paramagnetischen Abschirmungskonstanten σ* und der Nettoladung am Silicium q(Si) im Rahmen des EN-quantenchemischen Modells diskutiert. In der Reihe III wurden die Beiträge des (SiS)2-und 1-sila-2,5-dithia-cyclopentan-Rings zur chemischen Verschiebung ermittelt.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845080129
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    Über Chalkogenolate. 134. Untersuchungen über Ester von Halogenoameisensäuren 2. Darstellung und Eigenschaften von Se-Alkylestern der Chloromonothiomonoselenoameisensäure [1] (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 61-66 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 134. Studies on Esters of Haloformic Acids 2. Synthesis and Properties of Se-Alkyl Esters of Chloromonothiomonoselenoformic AcidThe hitherto unknown esters RSe—CS—Cl with R = C2H5 and nC3H7 have been prepared by reaction of thiophosgene with the corresponding alkane selenol. The compounds have been characterized with electron absorption, nuclear magnetic resonance (1H, 13C, and 77Se), infrared, and mass spectra.
    Notes: Die bisher nicht bekannten Ester RSe—CS—Cl mit R = C2H5 und nC3H7 wurden durch Umsetzung von Thiophosgen mit dem entsprechenden Alkanselenol hergestellt. Die Verbindungen wurden mit Elektronenabsorptions-, 1H-, 13C- und 77Se-NMR-, Infrarot- und Massenspektren charakterisiert.
    Additional Material: 5 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19845090206
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  • 170
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    Beiträge zur Chemie des Siliciums und Germaniums. XXXIV. Ein weiterer Beitrag zur Darstellung von Kaliumsilyl (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 95-100 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Silicon and Germanium. XXXIV. A Further Contribution to the Preparation of Potassium SilylThe reaction time for the preparation of potassium silyl from monosilane in glyme is abridged considerably by the use of dispersed Na/K alloy. The preparation is simplyfied by the use of pure dispersed potassium instead of the dispersed alloy. In this case a further abridgement of the reaction time is observed and the filtration of the residue after the end of the reaction is easier because there is no sodium in the residue. Crystalline potassium silyl, free of potassium hydride and glyme, is obtained by recrystallisation followed by slow crystallisation from a glyme/benzene mixture. During a storage of 30 month the crystals turned out to be stable.
    Notes: Die Reaktionszeit für die Darstellung von Kaliumsilyl aus Monosilan in Monoglyme verkürzt sich bei Verwendung von dispergierter Na/K-Legierung erheblich. Die Darstellung vereinfacht sich, wenn statt der dispergierten Na/K-Legierung reines dispergiertes Kalium eingesetzt wird. Hierbei wird eine weitere Verkürzung der Reaktionszeit festgestellt, und die Filtration des Rückstandes nach Ende der Reaktion ist durch das Fehlen des Natriums einfacher. Kaliumsilylkristalle, in denen weder Kaliumhydrid noch Monoglyme nachweisbar sind, werden durch Umkristallisieren und nachfolgende langsame Kristallisation aus einem Monoglyme/Benzol-Gemisch erhalten. Die Kristalle erwiesen sich bei einer 30monatigen Lagerung als stabil.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845090210
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  • 171
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    Über Oxothorate der Alkalimetalle. Zur Kenntnis von K3NaTh2O6 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 127-137 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Oxothorates of the Alkaline Metals: K3NaTh2O6For a first time single crystals of a (in addition: new) oxothorate were prepared starting with the binary oxides [1 200°C, 4d, then 1 300°C, 5d, Ni-bomb; powder: 650°C, 10d, Ag-bomb]. The colourless, transparent single crystals are monoclinic, C2/c, a = 629.64 pm, b = 1 089.93 pm, c = 1 259.75 pm, β = 99.66°, z = 4, Dx = 5.458 g cm-3 and Dpyc = 5.456 gcm-3. It is an ordered variant of the NaCl-type; MoKα, fourcircle diffractometer data (PW 1100), R = 7.67 and Rw = 7.35% for 1 083 of 1 236 I0 (hkl). The Madelung Part of Lattice Energy, MAPLE, is calculated and discussed.
    Notes: Erstmals wurden Einkristalle eines zudem neuen Oxothorates, K3NaTh2O6, aus den binären Komponenten dargestellt [1 200°C, 4d, dann 1 300°C, 5d, Ni-Bömbchen; Pulver analog: 650°C, 10d, Ag-Bömbchen]. Die farblosen, durchsichtigen Einkristalle kristallisieren monoklin, C2/c, a = 629,64 pm, b = 1 089,93 pm, c = 1 259,75 pm, β = 99,66°, Z = 4, drö = 5,458 g cm-3 und dpyk = 5,456 g cm-3. Es liegt eine geordnete NaCl-Variante vor; MoKα, Vierkreisdiffraktometerdaten (PW 1100), R = 7,67 und Rw = 7,35% für 1 083 von 1 236 I0(hkl). Der Madelunganteil der Gitterenergie, MAPLE, wird berechnet und diskutiert.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845090213
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    Nitrat-, Thiosulfat-, Sulfat- und Sulfid-Cancrinit (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 509 (1984), S. 153-160 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nitrate-, Thiosulphate-, Sulphate-, and Sulphide Cancrinite1For the synthesis of the compounds to a solution of sodium aluminate there is added in excess sodium nitrate, or sodium thiosulphate, or sodium sulphite, or sodium sulphide. After heating a solution of sodium silicate is added, and the suspension is hold at 110°C for a long time, the precipatite is filtered, washed, and dried.2The white compounds are characterized in composition and crystal structure by chemical and X-ray analysis and densities.3The unimolecular hexagonal cell of the compounds has the cancrinite structure (lattice constants and densities see „Inhaltsübersicht“).4By heating of thiosulphate cancrinite at 1 000°C in air there is produced a nice deep blue coloured pigment.
    Notes: 1Zur Darstellung der Verbindungen wird zu einer Natriumaluminatlösung Natriumnitrat oder Natriumthiosulfat oder Natriumsulfat oder Natriumsulfid bei Zimmer-temperatur im Überschuß gegeben. Nach Aufheizen wird eine Wasserglaslösung zugetropft, die Suspension längere Zeit bei 110°C gehalten, der Niederschlag abfiltriert, gewaschen und getrocknet.2Die weißen Verbindungen werden in Zusammensetzung und Kristallstruktur durch chemische und röntgenographische Analyse sowie Dichten charakterisiert.3Mit 1 Molekel/Zelle kristallisieren die Verbindungen im hexagonalen Cancrinitgitter mit den Konstanten und Dichten: TextVerbindungGitterkonstanten in ÅDichten in g/ml a0c0RöntgenPyknometerNa8[Al6Si6O24](NO3)2 · 4 H0O12,68 ± 0,025,18 ± 0,012,522,30Na8[Al6Si6O24](S2O3) · 3 H2O12,73 ± 0,025,02 ± 0,032,512,28Na8[Al6Si6O24](SO4) · 3 H2O12,674 ± 0,0045,173 ± 0,0032,422,37Na8[Al6Si6O24](S) · 4 H2O12,669 ± 0,0075,187 ± 0,0032,312,244Durch Glühen des Thiosulfat-Cancrinits bei 1 000°C an Luft erhält man ein schönes tiefblaues Pigment.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845090216
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    Masthead (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984) 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845100301
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    Benzylnickel(II)-Komplexe und ihre Reaktionen (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 11-15 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Benzyl Nickel(II) Complexes and their ReactionsBy the oxydative addition of p-substituted benzyl chlorides to (Ph3P)2Ni(C2H4) at -20°C the violet nickel(II) complexes (Ph3P)2Ni(p-CH2C6H4R)Cl (R = CN, COOH, CH3, Cl) are, formed. In water containing solutions the carbonic acid (Ph3P)2Ni(p-CH2C6H4COOH)Cl is rearranged to the corresponding p-methylbenzoate.With carbon dioxide the complexes (Ph3P)2Ni(p—CH2C6H4R)Cl react like Grignard compounds. Diphenyl ethine and butadien-1,3 are inserted in the Ni - C bond at room temperature. Substituted nickel-σ-vinyl or π-allyl complexes are obtained. The reactivity of the nickel-σ-benzyl compounds is compared with that of other nickel(II)-alkyl compounds.
    Notes: Die oxydative Addition von p-substituierten Benzylchloriden an (Ph3P)2—Ni(C2H4) bei -20°C ergibt die violetten Nickel(II)-Komplexe (Ph3P)2Ni(p—CH2C6H4R)Cl (R = CN, COOH, CH3, Cl). Die Carbonsäure (Ph3P)2Ni(p—CH2C6H4COOH)Cl lagert sich in Gegenwart von Wasser in das entsprechende p-Methylbenzoat ein.Die Verbindungen des Typs (Ph3P)2Ni(p—CH2C6H4R)Cl reagieren mit Kohlendioxid grignardanalog. Diphenylethin und Butadien-1,3 werden bei normaler Temperatur in die Ni - C-Bindung eingeschoben. Dabei entstehen substituierte Nickel-σ-vinyl- bzw. π-allyl-Komplexe. Das Reaktionsverhalten der Nickel-σ-benzylverbindungen wird mit dem anderer Nickel(II)-alkylverbindungen verglichen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845100303
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    Preparation and Crystal Structure of La3ReO8 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 46-50 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Darstellung und Kristallstrukturbestimmung von La3ReO8La3ReO8 wurde bei 1425°C dargestellt, die Strukturbestimmung ergab abweichende Resultate von einer Darstellung, die bei 900°C erfolgte (BAUD u. Mitarb. 1979). Die Hochtemperaturmodifikation kristallisiert in der monoklinen Raumgruppe P21/m mit a = 7,757(1), b = 7,777(1), c = 5,928(1) Å, γ = 111,1°, Z = 2. Die Struktur wurde durch Patterson und Fouriersynthesen gelöst und bis R(F) = 0,073 verfeinert. Die Struktur besteht aus isolierten, verzerrten ReO6-Oktaedern und Doppelketten von kantenverknüpften La4O-Tetraedern.
    Notes: The crystal structure of La3ReO8, prepared at 1425°C, is reported to be different from a previous result on a preparation at 900°C (BAUD et al., 1979). The high temperature modification crystallizes in the monoclinic space group P21/m with a = 7.757(1), b = 7.777(1), c = 5.928(1) Å, γ = 111.1°, Z = 2. The structure was solved by Patterson and Fourier methods from single crystal diffractometer data and refined to final R(F) = 0,073. The structure consists of isolated, distorted ReO6 octahedra and double chains of edge-shared La4O tetrahedra.
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    URL: http://dx.doi.org/10.1002/zaac.19845100308
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    Resonanzramanspektrum und Struktur von matrixisoliertem Te3 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 72-78 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Resonance Raman Spectrum and Structure of Matrixisolated Te3By condensing a mixture of 76% Te atoms and 24% Te2 molecules in a nitrogen matrix at 15 K followed by annealing to nearly 25 K we obtained Te3 molecules by a matrix reaction. The resonance Raman spectrum of Te3 contains 8 overtones of the symmetric stretching vibration. The following values for ω1 and x11 have been calculated for the isotopically pure species 126Te3: ω1 = 206.33 ± 0.15 cm-1; x11 = 0.24 ± 0.03 cm-1 and 130Te3: ω1 = 203.1 ± 0.2 cm-1; x11 = 0.22 ± 0.05 cm-1. Using a 1:1 ratio of 126Te and 130Te in the synthesis of Te3 the band shape of the envelopes of the superimposed spectra of all possible Te3 species could only be explained assuming a bent structure (120° ± 10°). The value of the force constant fr + frr of 210 ± 10 Nm-1 reflects multiple bonding in this molecule. The proposed structure also agrees with thermodynamical considerations.
    Notes: Wird eine Gasmischung aus 76% Te-Atomen und 24% Te2-Molekeln mit einem Überschuß Stickstoff bei 15 K abgeschreckt und anschließend kurz auf 25 K erwärmt, so entstehen durch eine Matrixreaktion Te3-Molekeln. Im Resonanzramanspektrum dieser Spezies werden 8 Obertöne der symmetrischen Streckschwingung beobachtet. Für zwei verschiedene Te-Isotope erhält man folgende Werte für ω1 und x11: 126Te3: 206,33 ± 0,15 cm-1, 0,24 ± 0,03 cm-1; 130Te3: 203,1 ± 0,20 cm-1, 0,22 ± 0,05 cm-1. Die Verwendung von Proben, die je 50% der beiden Isotopen enthalten führt zu einem Bandenmuster, bei dem die Intensität der einzelnen Banden und ihre Frequenzverschiebung für eine gewinkeltes Te3-Molekel sprechen (120° ± 10°). Der Wert der Kraftkonstante fr + frr von 210 ± 10 Nm-1 zeigt Mehrfachbindungsanteile an. Eine thermodynamische Betrachtung liefert zusätzliche Anhaltspunkte für eine offene (nicht ringförmige) Struktur vom Te3.
    Additional Material: 2 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845100311
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    Trialkylbismutine als Liganden in Carbonylkomplexen des Eisens und der VIa-Elemente (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 104-108 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Trialkylbismutines as Ligands in Carbonyl Complexes of Iron and Group VIa ElementsThe complexes (CO)4FeBiR3 (R = Et, Pr, Bu) are synthesized by reaction of Fe2(CO)9 and the corresponding bismutines. Complexes of the type Bu3BiM(CO)5 (M = Cr, Mo, W) are formed by irradiation of the hexacarbonyls of group VIa elements in tetrahydrofuran and subsequent addition of Bu3Bi. The novel compounds are obtained in 40 - 90% yield. They are stable in an inert atmosphere above 25°C. Their 1H-n. m. r., i. r., and m. s. data are discussed.
    Notes: Die Komplexe (CO)4FeBiR3 (R = Et, Pr, Bu) werden durch Umsetzung von Fe2(CO)9 mit den entsprechenden Bismutinen synthetisiert. Komplexe des Typs Bu3BiM(CO)5 (M = Cr, Mo, W) entstehen durch Bestrahlung der Hexacarbonyle der VIa-Elemente in Tetrahydrofuran und nachfolgende Umsetzung mit Bu3Bi. Die neuen Verbindungen werden in 40 - 90% Ausbeute erhalten. Sie sind bei Luftausschluß auch oberhalb von 25°C stabil. Ihre 1H-NMR-, IR- und EI-MS-Daten werden diskutiert.
    Additional Material: 2 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19845100315
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  • 178
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    Die Kristallstruktur von Ag2Ge2O5: Eine neuartige Gerüststruktur von Ge2O52- (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 143-151 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure of Ag2Ge2O5: A New Ge2O52- Network StructureAg2Ge2O5 was prepared from the binary oxides at high O2 pressures. Single crystal X-ray diffraction work indicated monoclinic symmetry (P21/c; a = 1101.3(2); b = 1006.3(1); c = 1221.9(3) pm; ß = 94.6(1)°). The structure was determined by direct methods (3372 independent structure factors) and refined to a conventional R value of 0.084. A new Ge2O52- network structure was found with germanium coordinated octahedrally (­d(Ge - O) = 188,7 pm) and tetrahedrally (­d(Ge - O) = 175,9 pm), in equal proportions, by oxygen. The polyhedra share vertices and edges, thus forming a three dimensional channel system, which is occupied by Ag+ ions. The shortest Ag - Ag distance of 284 pm, like the pale yellow colour of the compound, indicates Ag+ - Ag+ interaction.
    Notes: Durch Sauerstoffhochdrucksynthese wurde Ag2Ge2O5 aus den binären Komponenten dargestellt. Nach Einkristalluntersuchungen liegt monokline Symmetrie vor (P21/c; a = 1101,3(2); b = 1006,3(1); c = 1221,9(3) pm; ß = 94,6°(1); Z = 12). Die Struktur wurde mittels direkter Methoden (Ag-Positionen) und Fourier-Synthesen gelöst (3372 unabhängige Strukturfaktoren); der R-Wert konvergierte bei 8,4%. Das Anion Ge2O52- bildet eine neuartige Raumnetzstruktur, wobei die Germaniumatome jeweils zur Hälfte oktaedrisch [­d(Ge - O) = 188,7 pm] und tetraedrisch [­d(Ge - O) = 175,9 pm] von Sauerstoff koordiniert sind. Die Polyeder sind in der Weise über gemeinsame Ecken und Kanten verknüpft, daß dreidimensional vernetzte, kanalartige Hohlräume entstehen, die von den Gegenkationen (Ag+) ausgefüllt werden. Der kürzeste Ag - Ag-Abstand beträgt 284 pm und gibt, wie die blaßgelbe Eigenfarbe der Substanz, einen Hinweis auf bindende Ag+ - Ag+-Wechselwirkungen.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845100320
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  • 179
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    Synthese von Bis- und Tris(trimethylsilyl)methyl-aminofluorsilanen (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 510 (1984), S. 175-179 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of Bis- and Tris(trimethylsilyl)-methyl-aminofluorosilanesLithium-tris(trimethylsilyl)methane reacts with fluoro-silanes to give (Me3Si)3C - SiF2R (1 - 3, R = F, C6H5, CMe3). 1 and 2 react with lithiated amines to aminofluorosilanes 4 a, 5 a, 6 a, and with a 1, 3-migration of a silyl group to the structure isomeric trimethylsilylaminofluorsilanes 4 b, 5 b, 6 b, 7, 8. The disubstituted NH-compound 9 is obtained in the reaction of 1 with LiNH2.
    Notes: Lithium-tris(trimethylsilyl)-methan reagiert mit Fluorsilanen unter Substitution zu (Me3Si)3CSiF2R (1 - 3, R = F, C6H5, CMe3). Mit lithiierten Aminen reagieren 1 und 2 zu den Aminofluorsilanen 4a, 5a, 6a, und unter 1, 3-Silylgruppenwanderung zu den strukturisomeren Trimethylsilylaminofluorsilanen 4 b, 5 b, 6 b, 7, 8. In der Reaktion von 1 mit LiNH2 wird die disubstituierte NH-Verbindung 9 erhalten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845100324
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    Das Tris-trimethylsilyl-tert.butyl-cyclotetraphosphan (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 69-71 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tris-trimethylsilyl-tert.butyl-cyclotetraphosphaneP4(SiMe3)3CMe3 1, which was previously unknown in the series of the cyclotetraphosphanes P4(SiMe3)nCMe34-n, n = 0-4, could be obtained by the reaction of P3(SiMe3)5 with Me3CPCl2. 1 froms intensely coloured yellow crystals, melting point 143 ± 2°C. The 31P- and 1H-NMR data of 1 are given.
    Notes: Das in der Reihe der Cyclotetraphosphane P4(SiMe3)n(CMe3)4-n, n = 0-4, bisher noch unbekannte P4(SiMe3)CMe3 1 konnte durch Umsetzung von P3(SiMe3)5 mit Me3CPCl2 dargestellt werden. 1 bildet intensiv gelbe Kristalle, Schmp. 143 ± 2°C. Die 31P- und 1H-NMR-Daten von 1 werden angegeben.
    Additional Material: 1 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19845140708
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  • 181
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    [PPh3Cl]⊕[ReCl4(N2S2)]⊖ Synthese, IR-Spektrum und Kristallstruktur (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 72-78 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: [PPh3Cl]⊕[ReCl4(N2S2)]⊖; Synthese, IR-Spektrum und Kristall StruktureThe title compound is prepared by the reaction of [ReCl3(NSCl)2(POCl3)] with triphenylphosphane; it formes black crystals. The crystal structure determination was solved with X-ray methods (2861 observed independent reflexions, R = 0.038). The compound crystallizes monoclinic in the space group P21/n with four formula units per unit cell. The structure consists of [PPh3Cl]⊕ cations and [ReCl4(N2S2)]⊖ anions, in which the rhenium atom is surrounded octahedrally by four chlorine ligands and the N atoms of a ReN2S2-five-membered ring in cis-position (symmetry C2v). The Re—N bond lengths (181 pm) and the NS bond lengths (152 pm) are in the range of double bonds; the S—S distance is very long (253 pm). The i.r. spectrum is reported.
    Notes: Die Titelverbindung entsteht in Form schwarzer Kristalle bei der Reaktion von [ReCl3(NSCl)2(POCl3)] mit Triphenylphosphan. Die Kristallstruktur wurde mit Hilfe von Röntgenbeugungsdaten ermittelt ermittelt (2861 beobachtete unabhängige Reflexe, R = 0,038). Die Verbindung kristallisiert monoklin in der Raumgruppe P21/n mit vier Formeleinheiten pro Elementarzelle. Die Struktur besteht aus [PPh3Cl]⊕-Kationen und Anionen [ReCl4(N2S2)]⊖, in denen das Rhenium oktaedrisch von vier Chlorliganden und den beiden cis-ständigen Stickstoffatomen eines ReN2S2-Fünfringes umgeben ist (Symmetrie C2v). Die ReN-Abstände (181 pm) und die NS-Abstände (152 pm) entsprechen etwa Doppelbindungen; die S—S-Bindungslänge ist mit 253 pm sehr lang. Das IR-Spektrum wird mitgeteilt.
    Additional Material: 1 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845140709
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    Zur Kenntnis der Fluoride zweiwertiger Lanthanoide. II. Über die Synthese von MLnF3 aus MLnF4 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 92-98 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Fluorides of Divalent Lanthanoids. II. Synthesis of MLnF3 from MLnF4CsEuF3, CsYbF3, and RbYbF3, which had already been prepared via reduction of the corresponding trifluorides with alkali metal, were also obtained by reducing MLnF4 with M (M = Cs, Rb, K; Ln = Eu, Yb). No additional alkali fluoroperovskites of lanthanoids were detected either by reduction of LnF3 or MLnF4 with metallic Cs, Rb, or K or by other reactions, e.g. 3CsF + 2SmF3 + Sm. It was shown that the reaction of CsF with EuF2 (350-850°C) produced only very little CsEuF3.
    Notes: CsEuF3, CsYbF3 und RbYbF3, zuvor nur durch Reduktion von EuF3 bzw. YbF3 mit met. Cs bzw. Rb erhalten, entstehen auch bei der Reduktion von MLnF4 mit M (M = Cs, Rb, K; Ln = Eu, Yb). Weitere unbekannte Perowskite wie CsSmF3 erhält man auf diesem Wege nicht. Tempern von innigen Gemengen der binären Fluoride (z.B. CsF + EuF2) führt nur zu sehr unvollständiger Umsetzung. Auch Synthesen durch Komproportionierung (z. B. 3CsF + 2SmF3 + Sm) sind ohne Erfolg. Durchgeführt wurden alle Reduktionen von LnF3 (Ln = Sm, Eu, Tm, Yb) mit M (M = Cs, Rb, K).
    Additional Material: 5 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19845140712
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    Über Chalkogenolate. 139. Untersuchungen über Dialkylester von Chalkogenokohlensäuren. 2. O,Se- und S, Se-Dialkylmonothiomonoselenocarbonate (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 120-128 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 139. Studies on Dialkyl Esters of Chalcogenocarbonic Acids. 2. O,Se- and S, Se-Dialkyl MonothiomonoselenocarbonatesThe hitherto unknown esters RSe—CS—OR′, where R = C2H5, nC3H7 and R′ = C2H5, nC3H7, are formed by reaction of NaSeR with Cl—CS—OR′ and of RSe—CS—Cl with HOR′. At the first time, the esters RSe—CO—SR′ with R = R′ = C2H5, nC3H7 have been prepared by reaction between NaSeR and Cl—CO—SR′. The compounds have been characterized by means of diverse spectroscopic methods.
    Notes: Die bisher nicht bekannten Ester RSe—CS—OR′ mit R = C2H5, nC3H7 und R′ = C2H5, nC3H7 entstehen bei der Reaktion von NaSeR mit Cl—CS—OR′ und bei der von RSe—CS—Cl mit HOR′. Erstmals wurden die Ester RSe—CO—SR′ mit R = R′ = C2H5, nC3H7 durch Umsetzung von NaSeR mit Cl—CO—SR′ hergestellt. Die genannten Verbindungen wurden mit Hilfe verschiedener spektroskopischer Methoden charakterisiert.
    Additional Material: 8 Tab.
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    URL: http://dx.doi.org/10.1002/zaac.19845140716
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    Metall-Schwefelstickstoff-Verbindungen. 16. Reaktionsprodukte von Blei- und Zinnsalzen mit S4N4 Die Strukturen von PbN2S2 · NH3, PbN2S2 und SnCl4 · 2S4N4 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 107-114 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metal Sulfur Nitrogen Compounds. 16. Products of the Reaction of Lead- and Tin Salts with S4N4. Structures of PbN2S2 · NH3, PbN2S2, and SnCl4 · 2S4N4PbN2S2 · NH3 is monoclinic, P21/a, a = 5.671, b = 16.123, c = 6.102 Å, β = 95.12°, Z = 4, PbN2S2, however, orthorhombic, P212121, a = 4.375, b = 7.654, c = 12.274 Å, Z = 4. The planar five-membered PbN2S2 rings in both compounds show no remarkable differences. In PbN2S2 · NH3, the NH3 molecule is bound to Pb perpendicularly to the plane of the ring.The structure of the long known addition compound SnCl4 · 2S4N4 was determined. It is orthorhombic, Pc21b, a = 11.467, b = 11.995, c = 12.374 Å, Z = 4. Sn shows sixfold coordination, the two S4N4 rings are attached to Sn trans to each other via a N atom.
    Notes: PbN2S2 · NH3 kristallisiert monoklin, Raumgruppe P21/a mit a = 5,671 Å, b = 16,123 Å; c = 6,102 Å, β = 95,12°, Z = 4, PbN2S2 dagegen orthorhombisch, Raumgruppe P212121 mit a = 4,375 Å, b = 7,654 Å, c = 12,274 Å, Z = 4. Die ebenen fünfgliedrigen PbN2S2-Ringe beider Verbindungen unterscheiden sich nur unwesentlich. Bei PbN2S2 · NH3 ist an Pb zusätzlich noch ein NH3-Molekül senkrecht zur Ringebene gebunden.Von der schon lange bekannten Additionsverbindung SnCl4 · 2S4N4 konnte ebenfalls die Struktur bestimmt werden: orthorhombisch, Raumgruppe Pc21b mit a = 11,467 Å, b = 11,995 Å, c = 12,374 Å, Z = 4. Sn ist 6fach koordiniert, die beiden S4N4-Ringe sind über je ein N-Atom in Transstellung an Sn gebunden.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845140714
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    Zum Aufbau schlecht geordneter Calciumhydrogensilicate. VI. Chemische, ESR- und Mößbauer-spektroskopische Untersuchungen zum Einbau von Fe3+-Ionen in C—S—H(Di, Poly) (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 149-163 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Structure of Ill-crystallized Calcium Hydrogen Silicates. VI. Chemical, ESR, and Mössbauer-Spectroscopic Investigations on the Incorporation of Fe3+ into C—S—H(Di, Poly)C—S—H(Di, Poly), prepared by precipitation reactions from sodium silicate solutions in presence of Fe3+ ions, incorporates at least up to 0.09 Fe2O3/SiO2. Thereby the anion composition of the C—S—H(Di, Poly) ist not affected.The results of ESR and Mössbauer spectroscopic measurements show, that Fe is incorporated as Fe3+ at octahedral sites. Only less than 1% of the total amount of Fe3+ is situated at tetrahedral sites. In good accordance with that is the change of thermal stability of the silicate anions concerning condensation and degradation reactions.
    Notes: In C—S—H(Di, Poly), das bei 80°C (353 K) über Fällungsreaktionen aus Natriumsilicatlösungen in Gegenwart von Fe3+-Ionen synthetisiert wurde, lassen sich bis mindestens 0,09 Fe2O3/SiO2 einbauen. Der Anionenaufbau des C—S—H(Di, Poly) wird dadurch nicht verändert. Aus ESR- bzw. Mößbauer-spektroskopischen Befunden geht hervor, daß das Eisen als Fe3+ hauptsächlich auf Oktaederplätzen vorliegt, während Tetraederplätze nur von weniger als 1% der Gesamteisenmenge besetzt werden. Die Änderung der thermischen Stabilität der Silicatanionen gegenüber Kondensations- und Abbaureaktionen steht mit dem Einbau von Fe3+ auf Oktaederplätzen in guter Übereinstimmung.
    Additional Material: 6 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845140719
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    Chalkogenfluoride in niedrigen Oxydationsstufen. IX.Als Teil VIII gilt [6]; Teil VII siehe [4]. Darstellung und Charakterisierung von SF3SSFTeilweise vorgetragen auf der Chemiedozententagung in Dortmund (14.-18. 3. 1983) und dem 8. Europäischen Fluorsymposium in Jerusalem (21.-26. 8. 1983). (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 171-178 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Lower Chalcogen Fluorides. IX. Preparation and Characterization of SF3SSFDuring cocondensation of SF2 and SSF2 the new compound 1,3-Difluorotrisulphane-1,1-difluoride is formed in low yield and can be isolated by means of low temperature fractionation. The compound was unequivocally characterized by 19F-n.m.r,i.r.,Raman, and mass spectra. The unstable compound ist a colourless, viscous liquid with an extrapolated boiling point of 94°C and a melting point of -62°C. It decomposes to SF4 and SSF2 in the gas phase.
    Notes: Bei der Cokondensation von SF2 und SSF2 entsteht in geringen Ausbeuten die neue Verbindung 1,3-Difluor-trisulfan-1,1-difluorid, SF3SSF, die mittels Tieftemperaturfraktionierung isoliert werden konnte. Durch 19F-NMR-, IR-, Raman- und Massenspektren wurde die Verbindung eindeutig charakterisiert. Das sehr zersetzliche SF3SSF ist eine farblose, viskose Flüssigkeit mit einem extrapolierten Siedepunkt von 94°C und einem Schmelzpunkt von -62°C. Es zerfällt in der Gasphase in SF4 und SSF2.
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    URL: http://dx.doi.org/10.1002/zaac.19845140721
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    Formation and decomposition of Lanthanum Monoxocarbonate (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 205-212 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Bildung und Zersetzung von LanthanoxidcarbonatAmorphes Lanthancarbonat wird durch Hydrolyse von Lanthanisopropoxid mit wäßriger Ammoniaklösung an Luft dargestellt. Lanthanoxidcarbonat, La2O(CO3)2 · H2O, kristallisiert, wenn die amorphe Substanz mit heißem Wasser gewaschen wird. Die Kristallisation und das thermische Verhalten des kristallinen Materials werden röntgenographisch, thermoanalytisch und IR-spektroskopisch untersucht. Die Zersetzung des La2O(CO3)2 · H2O in das IA-(LaO)2CO3 wird bei 440 bis 540°C beobachtet. Die Zersetzungsisothermen können durch eine gebrochene rationale Funktion beschrieben werden; die Aktivierungsenergie beträgt 42,6 kcal · mol-1. IA-(LaO)2CO3 zersetzt sich dann zum A-La2O3 bei 750 bis 870°C. Die Kinetik wird ebenfalls durch eine gebrochene rationale Funktion interpretiert; die Aktivierungsenergie beträgt 58,3 kcal · mol-1.
    Notes: Amorphous lanthanum carbonate was prepared by hydrolysis of lanthanum isopropoxide using ammonia water in the atmosphere. Lanthanum monoxocarbonate, La2O(CO3)2 · H2O, crystallizes when this amorphous material was washed with hot water. The crystallization and thermal behavior of the crystalline material are studied by X-ray diffraction, thermal analysis, and infrared spectroscopy. The decomposition of La2O(CO3)2 · H2O into type-IA (LaO)2CO3 is observed at 440 to 540°C. Decomposition isotherms are described by the contracting cube equation, the activation energy being 42.6 kcal mol-1. Type-IA (LaO)2CO3 subsequently decomposes to A-type La2O3 at 750 to 870°C. The kinetics is also interpreted in terms of the contracting cube equation, the activation energy being 58.3 kcal mol-1.
    Additional Material: 5 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845140725
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    Neues zum chemischen Transport von CuO und Cu2O (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 514 (1984), S. 240-240 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845140729
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    Beiträge zur Strukturchemie phosphorhaltiger Ketten und Ringe. 11. Die Kristall- und Molekülstrukturen der beiden Konfigurationisomeren des Tetraphospha-silaspiro[2.2]pentans (PBut)2Si(PBut)2Die Ergebnisse dieser Untersuchung sind am 9. 8. 1983 auf dem “Eighth European Crystallographic Meeting” (ECM 8) in Lüttich kurz mitgeteilt worden [2]. (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 7-18 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structural Chemistry of Phosphorus Containing Chains and Rings. 11. Crystal and Molecular Structures of the Two Stereoisomers of Tetraphospha-silaspiro[2.2]pentane (PBut)2Si(PBut)2The spirocyclic compound 1,2,4,5-tetra-tert-butyl-1,2,4,5-tetraphospha-3-silaspiro[2.2]pentane exists in tow diastereomers of point symmetry 4 and 2. The isomer with symmetry 4 even in the solid crystallizes tetragonally in I41/a with a = 1247.0, c = 1505.5 pm and Z = 4. The isomer of fairly exact symmetry 2 crystallizes triclinically in P1 with a = 612.8, b = 996.3, c = 1017.2 pm, α = 75.63, β = 72.38, γ = 88.71° and Z = 1. In this disordered structure the surroundings of Si is slightly distorted due to the influence of the substituents. The (average) bond lengths are (4, 2): d(Si—P) = 220.09(9), 221.5(5); d(P—P) = 225.5(2), 224.2(5); d(P—C) = 189.4(3), 190(2); d(C—C) = 151.4(4), 152(3) pm. The geometry of the substituents in both isomers is quite normal.
    Notes: Die Spiroverbindung 1,2,4,5-Tetra-tert-butyl-1,2,4,5-tetraphospha-3-silaspiro[2.2]pentan liegt in zwei Diastereomeren der Punktsymmetrie 4 und 2 vor. Das Isomer der auch im Festkörper exakten Symmetrie 4 kristallisiert tetragonal in der Raumgruppe I41/a mit a = 1247,0, c = 1505,5 pm und Z = 4. Das sterisch weniger günstige Isomer der im Festkörper nicht streng erfüllten Symmetrie 2 kristallisiert triklin in der Raumgruppe P1 mit a = 612,8, b = 996,3, c = 1017,2 pm, α = 75.63, β = 72,38, γ = 88,71° und Z = 1. In dieser nur fehlgeordnet beschreibbaren Struktur wird die Umgebung des Si durch Substituenteneinflüsse etwas verzerrt. Die (mittleren) Bindungslängen betragen (4, 2): d(Si—P) = 220,09(9), 221,5(5); d(P—P) = 225,5(2), 224,2(5); d(P—C) = 189,4(3), 190(2); d(C—C) = 151,4(4), 152(3) pm. Die Geometrie der Substituenten ist in beiden Isomeren normal.
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    Synthesen des Anions S3N3O2-, eines stabilen sechsgliedrigen Schwefel-Stickstoff-Ringes mit einem 8π-Elektronengerüst (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 51-60 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Syntheses of the Anion S3N3O2-, a Stable Six-membered Sulfur-Nitrogen Ring with an 8π-Electron SkeletonThe dark blue-violet cyclotrithiazene-dioxide anion S3N3O2-has been synthesized on different pathways: 1. reaction of S4N4O2 with alkali azides, 2. metathesis of (CH3)3ES3N3O2 (E = Si, Sn) with CsF, 3. addition of S4N4O2 and alkali bis(trimethylsilyl)-amides followed by cation exchange with tetraphenylarsonium chloride, and 4. reaction of S4N4O2 with trimethylsilyliminotriphenylphosphorane in a molar ratio of 1:1. Excess iminophosphorane leads to the formation of a covalent 1.5-disubstituted S4N4 derivative. Reaction mechanisms will be discussed and structures of trithiatriazine-anions will be compared.
    Notes: Das dunkelblauviolette Cyclotrithiatriazendioxid-Anion S3N3O2- konnte auf verschiedenen Wegen dargestellt werden: 1. Umsetzung von S4N4O2 mit Alkaliaziden, 2. Reaktion von (CH3)3ES3N3O2 (E = Si, Sn) mit CsF, 3. Addition von S4N4O2 und Alkali-bis(trimethylsilyl)-amiden mit anschließendem Kationenaustausch mit Tetraphenylarsoniumchlorid und 4. Umsetzung von S4N4O2 mit Trimethylsilyliminotriphenylphosphoran im Molverhältnis von 1:1. Ein überschuß des Iminophosphorans führt zur Bildung eines kovalenten 1,5-disubstituierten S4N4-Derivats. Reaktionsmechanismen werden diskutiert und Strukturvergleiche an Trithiatriazinanionen durchgeführt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845150806
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  • 191
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    Die Reaktionen von Eisen(III)-chlorid mit Trithiazylchlorid. Die Kristallstruktur von [S4N4Cl]+[FeCl4]⊖ (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 69-80 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Iron Trichloride with Trithyazyl Chloride. Crystal Structure of [S4N4Cl]+[FeCl4]-Iron trichloride reacts with (NSCl)3 yielding S4N4[FeCl4]2, S3N3Cl2[FeCl4] or S4N4Cl[FeCl4], depending on the reaction conditions. The i.r. spectra prove the presence of [FeCl4]⊖ ions for all three compounds. The 57Fe-Mössbauer spectra show a slight quadrupole splitting at 80 K for S3N3Cl2[FeCl4] (ΔEQ = 0.42 mm · s-1) and S4N4Cl[FeCl4] (ΔEQ = 0.23 mm · s-1), which indicates a slight deformation of the FeCl4⊖ tetrahedra. The crystal structure of S4N4Cl[FeCl4] was determined and refined with X-ray diffraction data (2549 independent reflexions, R = 0.026). S4N4Cl[FeCl4] crystallizes in the triclinic space group P1 with two formula units per unit cell. The lattice constants are a = 712, b = 911, c = 1006 pm, α = 76.5°, β = 83.8° and γ = 80.5°. The structure consists of the so far unknown [S4N4Cl]⊕ cations and slightly deformed FeCl4⊖ ions. The [S4N4Cl]⊕ ion consists of a S4N4 ring built up of two nearly planar S3N2 fragments having a dihedral angle of 136°. The average SN bond length is 157 pm, the SCI bond length 214 pm.
    Notes: Eisen(III)-chlorid reagiert mit (NSCl)3 je nach den angewandten Versuchsbedingungen unter Bildung von S4N4[FeCl4]2, S3N3Cl2[FeCl4] oder S4N4Cl[FeCl4]. Nach den IR-Spektren enthalten alle Verbindungen das FeCl4⊖-Anion. Die 57Fe-Mößbauer-Spektren lassen anhand der endlichen Beträge der Quadrupolaufspaltung bei 80 K für S3N3Cl2[FeCl4] (ΔEQ = 0,42 mm · s-1) und für S4N4Cl[FeCl4] (ΔEQ = 0,23 mm · s-1) leicht verzerrte FeCl4⊖-Tetraeder erkennen. Die Kristallstruktur von S4N4Cl[FeCl4] wurde mit Hilfe von Röntgenbeugungsdaten ermittelt und verfeinert (2549 unabhängige, beobachtete Reflexe, R = 2,6%). S4N4Cl[FeCl4] kristallisiert in der triklinen Raumgruppe P1 mit zwei Formeleinheiten pro Elementarzelle. Die Gitterkonstanten sind a = 712, b = 911, c = 1006 pm; α = 76,5°, β = 83,8°, γ = 80,5°. Die Struktur besteht aus dem bisher unbekannten [S4N4Cl]⊕-Kation und leicht verzerrten FeCl4⊖-Anionen. Das [S4N4Cl]⊕-Ion bildet einen S4N4-Achtring, der aus zwei zueinander gefalteten, nahezu ebenen Ringfragmenten S3N2 besteht mit einem Faltungswinkel von 136°. Der mittlere SN-Bindungsabstand beträgt 157 pm, die S—Cl-Bindungslänge 214 pm.
    Additional Material: 3 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845150808
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  • 192
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    Zur Kenntnis von Li2[CuO2] [1, 2] (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 95-100 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Li2[CuO2]At the first time single crystals of Li2[CuO2] are prepared by exchange reaction. The crystal structure (I mmm) with a = 365.4(0), b = 285.9(0), c = 937.4(0) pm, Z = 2, dx = 3.73 g/cm3, dpyk = 3.67 g/cm3 was refined (four-circle-diffractometer data PW 1100, 343 Io(hkl), MoKα, R = 0.046, Rw = 0.041). The characteristic structure element is the planar chain \documentclass{article}\pagestyle{empty}\begin{document}$ {}_\infty ^1 \left[{{\rm CuO}_{4/2}} \right]^{2 -} $\end{document}. The Madelung Part of Lattice Energy, MAPLE, Effective Coordination Numbers, ECoN, these via Mean Fictive Ionic Radii, MEFIR, are calculated.
    Notes: Einkristalle von Li2[CuO2] wurden erstmals durch „Austauschreaktion“ dargestellt und die Kristallstruktur (I mmm) mit a = 365,4(0), b = 285,9(0), c = 937,4(0) pm, Z = 2, drö = 3,73 g/cm3, dpyk = 3,67 g/cm3 aufgeklärt (Vierkreisdiffraktometerdaten, PW 1100, 343 Io(hkl), MoKα, R = 0,046, Rw = 0,041). Das charakteristische Strukturelement ist die planare Ketve \documentclass{article}\pagestyle{empty}\begin{document}$ {}_\infty ^1 \left[{{\rm CuO}_{4/2}} \right]^{2 -} $\end{document}. Der Madelunganteil der Gitterenergie, MAPLE, Effektive Koordinationszahlen, ECoN, diese über Mittlere Fiktive Ionenradien, MEFIR, werden berechnet.
    Additional Material: 5 Tab.
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    Über Polygermane. X. Schwingungsspektren der Homocyclen (Ph2Ge)4, (Ph2Ge)5 und (Ph2Ge)6 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 141-146 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Polygermanes. X. Vibrational Spectra of the Homorings (Ph2Ge)4, (Ph2Ge)5, and (Ph2Ge)6IR and Raman transitions of the crystalline title compounds are given from 3100 to 100 cm-1. The spectra are nearly identical above 350 cm-1. The Gen ring vibrations range from 330 to 140 cm-1 and are unspecifically coupled with mass sensitive phenyl modes. The distribution of the individual values is discussed by means of the intracyclic bond angles determined by X-ray structure analysis.
    Notes: Für die kristallinen Titelverbindungen werden IR- und Raman-Übergänge im Bereich 3100-100 cm-1 angegeben. Oberhalb 350 cm-1 sind die Spektren weitgehend identisch. Die Gerüstschwingungen der Gen-Homocyclen liegen von 330-140 cm-1 und koppeln in unspezifischer Weise mit Phenylgruppenschwingungen. Die Verteilung der Einzelwerte wird an Hand von röntgeno-graphisch bestimmten intracyclischen Bindungswinkeln diskutiert.
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    URL: http://dx.doi.org/10.1002/zaac.19845150816
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  • 194
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    Über Chalkogenolate. 141. Untersuchungen über Trimethylsilylxanthogensäure. 1. Darstellung und Eigenschaften von Trimethylsilylxanthaten (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 173-181 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Chalcogenolates. 141. Studies on Trimethylsilyl Xanthic Acid. 1. Synthesis and Properties of Trimethylsilyl XanthatesThe trimethylsilyl xanthates \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm M}\left[{{\rm S}_2 {\rm C} - {\rm OSi}\left({{\rm CH}_3} \right)_3} \right]\,{\rm mit\,M} = {\rm Li,Na,K},{\rm Rb},{\rm Cs} $$\end{document} have been prepared by reaction of the corresponding silanolate with carbon disulfide. The compounds were characterized by means of chemical and diverse spectroscopic methods.The existence of unstable trimethylsilyl xanthic acid has been demonstrated.
    Notes: Die Trimethylsilylxanthate \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm M}\left[{{\rm S}_2 {\rm C} - {\rm OSi}\left({{\rm CH}_3} \right)_3} \right]\,{\rm mit\,M} = {\rm Li,Na,K},{\rm Rb},{\rm Cs} $$\end{document} wurden durch Umsetzung des entsprechenden Silanolats mit Kohlenstoffdisulfid hergestellt und mit Hilfe chemischer und verschiedener spektroskopischer Methoden charakterisiert.Die Existenz der instabilen Trimethylsilylxanthogensäure konnte gesichert werden.
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    URL: http://dx.doi.org/10.1002/zaac.19845150820
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  • 195
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    Über die Trithiocyanatoargentate Rb2Ag(SCN)3 und Cs2Ag(SCN)3 (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 199-206 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Trithiocyanatoargentates Rb2Ag(SCN)3 and Cs2Ag(SCN)3The trithiocyanatoargentates Rb2Ag(SCN)3 and CsAg(SCN)3 are obtained by crystallization from highly concentrated aqueous solutions. In the crystal structures the Ag atoms are surrounded tetrahedrally by the S atoms of 4 SCN groups. These Ag(SCN)4 tetrahedra are connected by common corners to polymer \documentclass{article}\pagestyle{empty}\begin{document}$ {}_\infty ^1 \left[{{\rm Ag}\left({{\rm SCN}} \right)_2 \left({{\rm SCN}_{2/2}} \right)} \right] $\end{document}1[Ag(SCN)2(SCN)2/2] anion in Rb2Ag(SCN)3, whereas dimeric Ag2(SCN)6 anions were found in the Cs compound.
    Notes: Die Trithiocyanatoargentate Rb2Ag(SCN)3 und Cs2Ag(SCN)3 können durch Kristallisation aus hochkonzentrierten wäßrigen Lösungen erhalten werden. In den Kristallstrukturen sind die Ag-Atome tetraedrisch durch die S-Atome von vier SCN-Gruppen umgeben. Diese Ag(SCN)4-Tetraeder sind in der Rb-Verbindung über zwei Ecken zu einem polymeren \documentclass{article}\pagestyle{empty}\begin{document}$ {}_\infty ^1 \left[{{\rm Ag}\left({{\rm SCN}} \right)_2 \left({{\rm SCN}_{2/2}} \right)} \right] $\end{document}1[Ag(SCN)2(SCN)2/2]-Anion verknüpft, während bei der Cs-Verbindung zweikernige Ag2(SCN)6-Anionen gebildet werden.
    Additional Material: 4 Ill.
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    URL: http://dx.doi.org/10.1002/zaac.19845150823
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    Dichte, Leitfähigkeit und Elektrolyse flüssiger Phasen in wasserfreien Systemen vom Typ MCl/AlCl3/SO2 (M = Li, Na) (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 187-198 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Density, Conductivity, and Electrolysis of Liquid Phases in Nonaqueous Systems of the Type MCl/AlCl3/SO2 (M = Li, Na)The temperature dependence of the density and specific conductivity was determined at liquid phases of the composition MAlCl4 · nSO2 + mAlCl3 (M = Li, n = 3-5.5, m = 0.266; M = Na, n = 1.36-4.56, m = 0.01-0.1). The investigated range was between -30°C and +45°C. For different compositions it was limited by the liquidus point and by the point, where the SO2-equilibrium pressure surpassed 1 bar. The densities are between 1.63 and 1.76 g/cm3, the specific conductivities between 0.03 and 0.07 Ω-1 · cm-1.In diluted solutions below -10°C NaAlCl4 behaves as a strong electrolyte in which dissociation in Na+ and AlCl4-is prevailing. By electrolysis of the liquid phases at room temperature reversible galvanic cells of the type M/MAlCl4 · nSO2/Cl2, C(M = Li, Na) are generated, which have an open circuit potential between 4.12 and 4.18 volts. The alkali metal deposits are stable in contact with the electrolyte up to 60°C in the case of lithium and 35°C with sodium.
    Notes: Die Temperaturabhängigkeit der Dichte und der Leitfähigkeit flüssiger Phasen der Zusammensetzung MAlCl4 · nSO2 + mAlCl3 (M = Li, n = 3-5,5, m = 0,266; M = Na, n = 1,36-4,56, m = 0,01-0,1) wurde gemessen im Bereich zwischen der Liquidustemperatur und der Temperatur, bei der der SO2-Gleichgewichtsbruck 1 bar erreicht (-30°C bis +45°C). Die Dichten liegen zwischen 1,63 bis 1,76 g/cm3 und die spezifischen Leitfähigkeiten zwischen 0,03 bis 0,07 Ω-1 · cm-1 · NaAlCl4 verhält sich in verdünnten SO2-Lösungen bei -10°C bis -20°C als starker Elektroyt, der überwiegend in Na+ und AlCl4- dissoziiert vorliegt. Bei der Elektrolyse entstehen reversible Galvanische Zellen vom Typ M/MAlCl4 · nSO2/Cl2, C (M = Li, Na), deren EMK 4,12 bis 4,18 V beträgt. Die Alkalimetallabscheidung ist im Kontakt mit dem Elektrolyten im Falle des Lithiums bis +60°C beim Natrium bis +35°C stabil. An Graphit-Pulveranoden entstehen neben gelöstem Chlor Cl(AlCl3)3-Intercalate.
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    URL: http://dx.doi.org/10.1002/zaac.19845150822
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    The CaO—MgO—P2O5 System at 1000°C for P2O5 ≤ 33.3 mole % (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 213-224 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Das CaO—MgO—P2O5-System bei 1000°C für P2O5 ≤ 33,3 Mol-%Das quasiternäre Phasendiagramm CaO—MgO—P2O5 bei 1000°C für P2O5 ≤ 33,3 Mol-% wurde bestimmt durch Erhitzen von 140 Mischungen unter Verwendung von vier Ausgangsmaterialien (CaHPO4, CaCO3, MgO und MgHPO4 · 3 H2O). Die Produkte wurden röntgenographisch untersucht und die Temperung fortgeführt bis keine Änderung in der Phasenzusammensetzung und der Peakposition der Röntgendiagramme beobachtet wurde, was gegebenenfalls zu Temperzeiten von über 1000 Stunden führte.Es existieren drei bevorzugte Bereiche für feste Lösungen: die Whitlockit-Phase und bei den ternären Verbindungen im Gebiet der Pyro- und Orthophosphatphase. Der Bereich der festen Lösung der ternären Pyrophosphat-Verbindung wurde durch die Änderung in der Peakposition der Röntgendiagramme mit der Zusammensetzung bestimmt und wurde zu 15,9 bis 27,5 Mol-% MgO gefunden.Die Zwei- und Dreiphasengebiete wurden aus der Änderung der Peakposition der Whitlockit und ternären Pyrophosphat-Verbindung bestimmt. Die Experimente wurden in Luft ausgeführt. Zusätzliche Versuche in CO2-Atmosphäre zeigten keine Änderungen in den Röntgendiagrammen, besonders in jenen in denen Apatit enthalten war. Die Apatitphase baute keine bestimmbare Menge von Mg ein, weder beim Tempern in Luft noch in CO2-Atmosphäre.
    Notes: The quasi ternary phase diagram CaO-MgO-P2O5 at 1000°C for P2O5 ≤ 33.3 mole-% is determined by heating some 140 compositions prepared from the appropriate ones of 4 starting chemicals (reagent grade CaHPO4, CaCO3, MgO, and MgHPO4 · 3 aq.). Products were investigated with X-ray diffraction and heating was continued until no more changes in phase composition and peak positions in the X-ray diffraction pattern were observed, leading occasionally to heating times of over 1000 hours.There are three major regions of solid solution: for the whitlockite phase, and for the ternary compounds on the pyro- and the ortho-phosphate join. The extent of solid solution of the ternary pyrophosphate compound was determined by the change in peak position in the X-ray diffraction pattern with composition and was found to be 15.9-27.5 mole-% MgO.Two and three phase areas were determined using the change in peak position data for the whitlockite and ternary pyrophosphate compound. The experiments were carried out in air. However additional experiments in a CO2 atmosphere revealed no changes in the X-ray diffraction patterns, apart from those in which apatite was involved. The apatite phase did not incorporate detectable amounts of Mg, not on heating in air nor on heating in a carbondioxide atmosphere.
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    URL: http://dx.doi.org/10.1002/zaac.19845150825
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    Zur Existenz und Struktur der sekundären Dithizonate (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 515 (1984), S. 230-240 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Existence and Structure of Secondary DithizonatesOn example of complexation with copper and palladium proved, that dithizone by double deprotonation forming neutral “secondary” dithiozonates, which have been characterized by elemental analyses, electronic, i.r., ESCA, and EPR spectra and magnetic measurements. Dithizone reacts about ligator atoms N,N′,S. Secondary dithizonates probable are present dimeric.
    Notes: Am Beispiel der Komplexbildung mit Kupfer und Palladium wird nachgewiesen, daß Dithizon unter zweifacher Deprotonierung neutrale, „sekundäre“ Dithizonate bildet, die durch Elementaranalyse, VIS-, IR-, EPR- und Photoelektronen-Spektren sowie magnetische Messungen charakterisiert werden. Dithizon wirkt über die Ligatoratome N,N′,S. Die sekundären Dithizonate liegen wahrscheinlich dimer vor.
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    URL: http://dx.doi.org/10.1002/zaac.19845150827
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    Beiträge zur Chemie des Phosphors. 142. P6(t-Bu)5H - das erste Cyclotetraphosphan mit P2-SeitenketteProfessor Walter Rüdorff zum 75. Geburtstage am 3. Oktober 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 516 (1984), S. 7-12 
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    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Phosphorus. 142. P6(t-Bu)5H - the First Cyclotetraphosphane with a P2 Side ChainThe thermolysis of 1, 2-di-tert-butyldiphosphane, H(t-Bu)P—P(t-Bu)H, leads to formation of the hitherto unknown hexaphosphane P6(t-Bu)5H (1). In the first instance the iso-P5H5 derivative P5(t-Bu)4H [3] is formed, which reacts further with H2(t-BuP)2 or H2(t-BuP)3 yielding 1. Compound 1 has been isolated in the pure state and structurally characterized as 1-(1,2-di-tert-butyldiphosphino)-2, 3, 4-tri-tert-butyl-cyclotetraphosphane, i. e. as a four-membered ring compound with a P2 side chain. Due to the chirality of the P atoms in the side chain, 1 exists as a mixture of two configurational isomers, the threo-and the erythro-form.
    Notes: Bei der Thermolyse von 1, 2-Di-tert-butyldiphosphan, H(t-Bu) P—P(t-Bu) H, entsteht aus dem zunächst gebildeten iso-P5H5-Derivat P5(t-Bu)4H [3] durch Weiterreaktion mit H2(t-BuP)2 oder H2(t-BuP)3 das bislang unbekannte Hexaphosphan P6(t-Bu)5H (1). Verbindung 1 wurde in reiner Form isoliert und strukturell als 1-(1, 2-Di-tert-butyldiphosphino)-2, 3, 4-tri-tert-butyl-cyclotetraphosphan, d. h. als Vierring-Verbindung mit P2-Seitenkette, charakterisiert. Wegen der Chiralität der P-Atome in der Seitenkette liegt 1 als Gemisch aus zwei Konfigurationsisomeren, der threo- und erythro-Form, vor.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845160902
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    Polymere Thiolatokomplexe [M(SPh)3]∞ der Metalle Molybdän, Wolfram, Eisen und Ruthenium mit linearen Metallketten. Synthese und Struktur von (OC)3Fe(SPh)3Fe(SPh)3Fe(CO)3 · 2(CH3)2COProfessor Walter Rüdorff zum 75. Geburtstage am 3. Oktober 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 516 (1984), S. 19-29 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polymeric Thiolato Complexes [M(SPh)3]∞ of the Metals Mo, W, Fe, and Ru with Linear Metal Chains. Synthesis and Crystal Structure of (OC)3Fe(SPh)3Fe(SPh)3Fe(CO)3 · 2(CH3)2COAt high temperature the reaction of the metal carbonyls Mo(CO)6, W(CO)6 and Fe(CO)5 with S2Ph2 (Ph = C6H5) yields the polymeric complexes [M(SPh)3]∞. Similarly [Ru(SPh)3]∞ can be obtained from ruthenium(III) acetylacetonate and HSPh. At room temperature under UV-irradiation Fe(CO)5 reacts with S2Ph2 to form the oligomeric complex (OC)3Fe(SPh)3Fe(SPh)3Fe(CO)3.The polymeric complexes [M(SPh)3]∞ (M = Mo, W, Fe, Ru) are composed of linear chains with bridging SPh-ligands between the metal atoms. Of these complexes [Fe(SPh)3]∞ is paramagnetic, whereas the others exhibit antiferromagnetic behaviour. The spin coupling is presumably connected with the formation of metal pairs, resulting in alternating shortened and extended distances in the metal chain. The oligomeric complex (OC)3Fe(SPh)3Fe(SPh)3Fe(CO)3 crystallizes triclinic in the space group P1 with z = 2. It has almost the symmetry D3d with a linear arrangement of the Fe atoms. The paramagnetism of Fe3(CO)6(SPh)6 can be explained by a d6 high spin configuration of the central atom and low spin behaviour of the two other Fe atoms, which are bonded to CO.
    Notes: Bei höherer Temperatur reagieren die Metallcarbonyle Mo(CO)6, W(CO)6 und Fe(CO)5 mit S2Ph2 (Ph = C6H5) unter Bildung der polymeren Komplexe [M(SPh)3]∞. Aufähnliche Weise kann [Ru(SPh)3]∞ aus Ruthenium (III)-acetylacetonat und HSPh erhalten werden. Bei Raumtemperatur unter UV-Bestrahlung führt die Reaktion von Fe(CO)5 mit S2Ph2 zum oligomeren Komplex (OC)3Fe(SPh)3Fe(SPh)3Fe(CO)3. Die polymeren Komplexe [M(SPh)3]∞ bestehen aus linearen Ketten, in denen die Metallatome durch SPh-Brücken verknüpft sind. [Fe(SPh)3]∞ ist paramagnetisch mit μ = 5,2 B.M., während die Komplexe des Mo, W und Ru antiferromagnetisches Verhalten zeigen. Die Spinkopplung ist vermutlich mit der Ausbildung von Metallpaaren verbunden, die alternierend lange Abstände in der Metallkette bewirken. Der oligomere Komplex (OC)3Fe(SPh)3Fe(SPh)3Fe(CO)3 kristallisiert triklin in der Raumgruppe P1 mit z = 2. Er hat nahezu die Symmetrie D3d, wobei die Fe-Atome eine lineare Anordnung bilden. Der Paramagnetismus von Fe3(CO)6(SPh)6 (μ = 6,15 B.M.) kann mit einer d6 high spin Konfiguration des Zentralatoms und low spin Verhalten der endständigen Fe-Atome erklärt werden.
    Additional Material: 21 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845160904
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