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  • Inorganic Chemistry  (7)
  • enthalpy of crystallization  (5)
  • CGH  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Enthalpies of solution and of crystallization of lithium nitrate and of lithium nitrate trihydrate in water at 25°C (1990)
    Springer
    Journal of solution chemistry 19 (1990), S. 1029-1039 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficients ; enthalpies of solution and hydration ; enthalpy of crystallization ; lithium nitrate ; lithium nitrate trihydrate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The enthalpies of crystallization of LiNO3 and LiNO3−3H2O from aqueous solutions at 25°C, measured by a calorimetric method and determined from the previously published data on the concentration dependence of the enthalpy of solution, are reported. The results are compared with the values obtained from the concentration dependences of the activity coefficients and from the temperature dependences of the solubilities. The enthalpy of solution at infinite dilution and the enthalpy of hydration are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650506
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  • 2
    Electronic Resource
    Electronic Resource
    Investigation of salt — Mixed solvent systems. XXXVII. Crystallization enthalpy of lithium chloride in mixed solvent systems (1990)
    Springer
    Journal of solution chemistry 19 (1990), S. 437-446 
    Details
    ISSN: 1572-8927
    Keywords: Acetone ; enthalpy of crystallization ; enthalpy of dissolution ; enthalpy of transition ; ion-solvent interaction ; lithium chloride ; methanol ; N,N-dimethylformamide ; solvation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The crystallization enthalpy of LiCl at 25°C in LiCl-H2O-cosolvent systems is determined calorimetrically as a function of the cosolvent content in the mixed solvent. This parameter is used for the investigation of heat phenomena accompanying the solvation of the salt in a saturated solution. The cosolvents employed include methanol, acetone, and N,N-dimethylformamide. The most pronounced change is effected by replacement of water with N,N-dimethylformamide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650376
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  • 3
    Electronic Resource
    Electronic Resource
    Investigations of salt — Mixed solvent systems XXXVIII. Crystallization enthalpy of magnesium chloride in mixed solvent systems (1990)
    Springer
    Journal of solution chemistry 19 (1990), S. 447-455 
    Details
    ISSN: 1572-8927
    Keywords: Acetone ; enthalpy of crystallization ; enthalpy of dissolution ; enthalpy of transition ; ion-solvent interaction ; magnesium chloride ; methanol ; N,N-dimethylformamide ; solvation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The crystallization enthalpies of MgCl2 in MgCl2−H2O-cosolvent systems at 25°C were determined calorimetrically as a function of the cosolvent content in the mixed solvent. Methanol, acetone, and N,N-dimethylformamide were employed as cosolvents. The results show the individual cosolvents to have very differently influences on the energy state of the salt in the saturated solution. The most pronounced changes are effected by an increase of the DMF content in the mixed solvent. The intensity of Mg2+-DMF interaction at a higher DMF content in the saturated solution considerably exceeds the Li+-DMF interaction in LiCl solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650377
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  • 4
    Electronic Resource
    Electronic Resource
    Enthalpies of solution and crystallization of ammonium aluminum sulphate dodecahydrate in water at 25°C (1995)
    Springer
    Journal of solution chemistry 24 (1995), S. 659-669 
    Details
    ISSN: 1572-8927
    Keywords: Ammonium aluminum sulphate dodecahydrate ; enthalpies of solution ; enthalpy of crystallization ; solubility ; vapor pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enthalpies of crystallization of NH4Al(SO4)2·12H2O from aqueous solutions at 25°C, measured using a calorimetric method and determined from previously published data on the concentration dependence of the enthalpy of solution, are reported. The results are compared with the values obtained from the temperature dependence of solubility and from vapor pressure data by using the Williamson equation. The integral and partial molar enthalpies of solution in concentrated and diluted solutions are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00973234
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  • 5
    Electronic Resource
    Electronic Resource
    Enthalpy of crystallization of lithium chloride from aqueous solution at 25°C (1986)
    Springer
    Journal of solution chemistry 15 (1986), S. 269-282 
    Details
    ISSN: 1572-8927
    Keywords: Activity coefficients ; enthalpy of crystallization ; enthalpy of dissolution ; enthalpy of formation ; lithium chloride ; solubility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The enthalpies of crystallization of LiCl and LiCl·H2O from aqueous solutions at 25°C are reported as measured by a calorimetric method and derived from the previously published concentration dependence of the enthalpy of solution data. The results are compared with those obtained from the concentration dependence of activity coefficients and from the temperature dependence of solubilities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00646695
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  • 6
    Electronic Resource
    Electronic Resource
    Olfactory neuroblastoma: Detection of genomic imbalances by comparative genomic hybridization (1997)
    Springer
    Acta neurochirurgica 139 (1997), S. 839-844 
    Details
    ISSN: 0942-0940
    Keywords: Olfactory neuroblastoma ; CGH ; molecular genetic abnormalities
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Olfactory neuroblastoma (esthesioneuroblastoma) is a very rare tumour of the olfactory mucosa. Morphological features and cytogenetic studies strongly suggest a neuro-ectodermal origin. Up to now, cytogenetic studies are inconsistent. Some of them have proposed that the tumour belongs to the pPNET family. In the present study we describe genomic imbalances in olfactory neuroblastoma in a 46-year-old woman by using the molecular cytogenetic technique — comparative genomic hybridization (CGH) — in order to define the spectrum of genetic abnormalities in the tumour. The anatomical location and morphological findings were the basis for the diagnosis of esthesioneuroblastoma. Immunohistochemical reactions for NSE, synaptophysin, chromogranin A, HNK-l/Leu-7 and S-100 revealed a characteristic immunophenotype. The CGH analysis showed multiple changes including DNA overrepresentations of chromosomes 4. 8, 11 and 14, partial DNA gains of the long arms of chromosomes 1 and 17, deletions of the entire chromosomes 16, 18. 19 and X, and partial losses of chromosomes 5q and 17p. This study represents an early utilisation of the CGH technique in olfactory neuroblastoma and demonstrates that the tumour carries complex chromosomal aberrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411401
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  • 7
    Electronic Resource
    Electronic Resource
    Analyseprogramm zur quantitativen Erfassung chromosomaler Aberrationen mittels komparativer genomischer Hybridisierung (CGH)*** (1996)
    Springer
    Der Pathologe 17 (1996), S. 342-348 
    Details
    ISSN: 1432-1963
    Keywords: Schlüsselwörter Komparative genomische Hybridisierung ; CGH ; Bildanalyse ; FISH ; Key words Comparative genomic hybridization ; CGH ; Image analysis ; Tumour cytogenetics ; FISH
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Comparative genomic hybridization (CGH) is a molecular cytogenetic method for the detection of chromosomal imbalances between a tumor and a normal genome. In order to produce quantitative and reproducible results, we developed an image analysis program that allows the detection and mapping of the genetic alterations. The result is represented as a CGH sum karyogram in which the genetic changes are documented as color coded-chromosomes. The aim of our investigation is to correlate the genotype with the phenotype on the basis of CGH sum karyograms and thus to achieve a genetic characterization that will supplement the morphological tumor description.
    Notes: Zusammenfassung Die komparative genomische Hybridisierung („comparative genomic hybridization“, CGH) ist ein molekularzytogenetisches Verfahren, welches die umfassende Analyse eines Tumorgenoms auf Über- und Unterrepräsentationen von DNA-Abschnitten ermöglicht. Um quantitative und reproduzierbare Aussagen über die genetischen Aberrationen machen zu können, wurde eine Software entwickelt, welche die objektive Erfassung von Ort und Art der Veränderungen ermöglicht. Das Ergebnis wird in Form eines CGH-Summenkaryogramms dargestellt, welches die genetischen Veränderungen als farbkodierte Chromosomen dokumentiert. Ziel dieser Untersuchungen ist es, auf der Grundlage von Summen-Karyogrammen eine Korrelation zwischen Genotyp und Phänotyp herzustellen und damit eine genetische Charakterisierung von Tumoren zu erreichen, die die morphologische Beschreibung ergänzt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002920050171
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Chemie von Haftgruppen, VI über die Eignung verschiedener Aldehyde und Ketone als Haftgruppen für Monoalkohole (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1885-1885 
    Details
    ISSN: 0009-2940
    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/cber.19911240831
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  • 9
    Electronic Resource
    Electronic Resource
    Über die Struktur einer neuen Modifikation des Phosphorsulfids P4S9 (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 588 (1990), S. 139-146 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Structure of a New Modification of Phosphorus Sulfide P4S9A new modification of P4S9 is formed by the reaction of phosphorus pentasulfide with isopropanol in a molar ratio 1:4. The pure substance can be isolated by repeated fractional crystallization from CS2. This modification crystallizes in the monoclinic space group P21/n with a = 855.5 pm, b = 1263.7 pm, c = 1245.3 pm, β = 104.94°, Z = 4. Normally the P4S9 I crystallizes from its melts, only by shorttime heating the cubic modification (P4S9 II) is yielded.
    Notes: Bei der Reaktion von Phosphor(V)-sulfid mit Isopropanol im Molverhältnis 1:4 bildet sich eine neue Modifikation des P4S9. Die reine Substanz läßt sich durch mehrfache fraktionierte Kristallisation aus CS2 isolieren. Diese Modifikation kristallisiert in der monoklinen Raumgruppe P21/n mit a = 855,5 pm, b = 1263, 7 pm, c = 1245,3 pm, β = 104,94°, Z = 4. Nach kurzzeitigem Aufschmelzen kristallisiert die kubische Modifikation (P4S9 II), während längeres Schmelzen zur Kristallisation des P4S9 I führt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19905880118
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  • 10
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Darstellung des Phosphorsäurefluoridpyridiniumbetains, Py · PO2F (Py = Pyridin)Professor Günther Rienäcker zum 80. Geburtstage am 13. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 512 (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: Studies on the Preparation of the Phosphoric Acid Fluoride Pyridinium Betaine, Py · PO2F (Py = Pyridine)Under anhydrous reaction conditions phosphoric acid chloride betaine, Py · PO2Cl (I), does not react with NaF or NaSO2F to the corresponding fluorine compound Py · PO2F (II). Reaction between AsF3 and I gives rise to the formation of compound II which is detectable by N.M.R.In an excess of pyridine POCl2F reacts with P4O10 to a mixture of I and II which are difficult to be separated. In a preparatively simple way II can be obtained by sulfur-oxygen exchange in liquid SO2 starting from dithiophosphoric acid fluoride betaine Py · PS2F.
    Notes: Versuche, ausgehend vom Phosphorsäurechloridpyrididiumbetain, Py · PO2Cl (I), unter wasserfreien Bedingungen durch Cl—F-Austausch das entsprechende Fluoridbetain, Py · PO2F (II), darzustellen, führen bei Verwendung von NaF und Natriumfluorosulfinat nicht zum Ziel, während bei der Reaktion mit AsF3 II im Reaktionsgemisch NMR-spektroskopisch nachgewiesen werden kann. Die Umsetzung von POCl2F mit P4O10 in überschüssigem Pyridin führt zu einem Gemisch aus I und II, aus dem jedoch II nur schwer isolierbar ist. In präparativ einfacher Weise kann II durch Schwefel-Sauerstoff-Austausch aus dem Dithiophosphorsäurefluoridbetain, Py · PS2F, in flüssigem SO2 erhalten werden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845120510
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