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  • Articles: DFG German National Licenses  (107)
  • 1990-1994  (83)
  • 1970-1974  (24)
  • Inorganic Chemistry  (107)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 596 (1991), S. 89-92 
    ISSN: 0044-2313
    Keywords: Calcium oxychloride ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: An Oxychloride of Calcium: Ca4OCl6Ca4OCl6 (hexagonal, P63mc, Z = 2), a = 905.8(3), c = 686.3(4) pm, (R = 0.031) crystallizes as colourless needles from reducing melts (CaCl2, Ca) that contain small amounts of „oxygen“. It contains „isolated“ tetrahedral units [Ca4O] and is isotypic with e.g., Ba4OCl6, Yb4OCl6 and K6HgS4. Ca4OCl6 does not form in the dehydration process of, for example, CaCl2 · 6 H2O.
    Notes: Ca4OCl6 (hexagonal, P63mc, Z = 2, a = 905.8(3)); c = 686.3(4) pm, (R = 0,031) kristallisiert in Form farbloser Nadeln aus „reduzierenden Schmelzen“ (CaCl2, Ca), die wenig „Sauerstoff“ enthalten. Es enthält „isolierte“ tetraedrische [Ca4O]-Einheiten und ist isotyp mit z. B. Ba4OCl6, Yb4OCl6 oder K6HgS4. Ca4OCl6 entsteht nicht beim Entwässern von z. B. CaCl2 · 6 H2O.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 408 (1974), S. 15-20 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Notice on the Magnetic Behaviour of Li3CrO4Li3CrO4, a smaragd green powder, is due to powder photographs (Guinier-Simon-technique) isotypic with orthorhombic HT—Li3PO4, a = 6.309, b = 10.851, c = 4.952 Å, Z = 4. Between 298 and 10K the Curie-Weiss-Law is obeyed with μ=1.60 B.M. and Θ=+10 K. Below 5 K ferromagnetism is observed. ESR measurements at 4.2 K and more pronounced at 1.8 K show anisotropy of the ligand field.
    Notes: Li3CrO4, ein smaragdgrünes Pulver, ist nach Guinier-Simon-Aufnahmen isotyp mit HT-Li3PO4, a = 6,309 Å, b = 10,851 Å, c = 4,952 Å, Z = 4. Zwischen 298 und 10 K wird das Curie-Weisssche Gesetz mit μ=1,60 B.M., Θ=+10K befolgt. Unterhalb von 5 K tritt überraschend Ferromagnetismus auf. ESR-Messungen bei 4,2 K und ausgeprägter bei 1,8 K zeigen eine Anisotropie des Ligandenfeldes.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 408 (1974), S. 275-282 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Dinitrito Cobalt(III) Complexes. I. Preparation and Absorption Spectra of Di(ethylenediamine) Cobalt(III) PerchloratesCis and trans dinitrito diethylenediamine cobalt perchlorates could be prepared starting with carbonato and trans dichloro ethylenediamine cobalt perchlorate. Spectroscopic data are reported and compared with those of the corresponding dinitro complexes.
    Notes: Ausgehend von Carbonato- und trans-Dichloro-diäthylendiaminkobalt(III)-perchlorat konnten cis- und trans-Dinitrito-diäthylendiamin-kobalt(III)-perchlorate dargestellt werden. Ihre Spektren im sichtbaren Gebiet und UV werden mitgeteilt und mit den Spektren der entsprechenden Dinitrokomplexe verglichen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Dinitrito Cobalt(III) Complexes. II. Kinetics of Isomerisation and Reaction of Cis and Trans Dinitrito Di(ethylenediamine) Cobalt(III) Perchlorates with Hydrazoic AcidAfter a reinvestigation of the kinetic data of the nitrito-nitro isomerisation of cis and trans dinitrito-di(ethylenediamine) cobaltic perchlorate, the kinetics of the reactions between both coordination compounds and hydrazoic acid, to yield the diaquo compounds, nitrogen and dinitrogen oxide, has been studied by gasvolumetric measurements in the temperature range from 1 to 15°C. In azide buffer solutions both reactions proceed independently of pH, in two stages bimolecular with regard to the complex ion and hydrazoicacid. In both cases the first stage velocity constant is five times greater than the second constant. The cis-compounds react approximately three times faster than the trans-compounds. Possible reasons for the observed facts are discussed.
    Notes: Nach nochmaliger Ermittlung der kinetischen Daten der Nitritonitro-Isomerisierung von cis- bzw. trans-Dinitrito-di(äthylendiamin)-kobalt(III)-perchlorat wurde die Kinetik der Umsetzung der beiden Komplexverbindungen mit Stickstoffwasserstoffsäure zu den Diaquo-di(äthylendiamin)-Komplexen, Stickstoff und Distickstoffmonooxid gasvolumetrisch im Temperaturbereich von 1—15°C untersucht. In Azidpufferlösungen verlaufen die Reaktionen unabhängig vom pH in zwei Stufen bimolekular in bezug auf das jeweils vorliegende Komplexion und Stickstoffwasserstoffsäure, wobei die erste Geschwindigkeitskonstante etwa fünfmal größer ist als die zweite. Die cis-Verbindungen reagieren in beiden Stufen etwa dreimal rascher als die trans-Komplexe. Mögliche Gründe für diese Beobachtungen werden diskutiert.
    Additional Material: 3 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 869-875 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Glycosides of Amino Sugars, IV. Synthesis of Disaccharides of 2-Amino-2-deoxy- and 3-Amino-3-deoxy-D-glucoseThe solvent dependency of the Koenigs-Knorr reaction between two derivatives of 2-amino-2-deoxy-D-glucose (3 and 4) was investigated. The highest yield of the α-disaccharide 5 was obtained in the system toluene/1,2-dimethoxyethane. The condensation of two derivatives of 3-amino-3-deoxy-D-glucose (11 and 13) under similar conditions yielded the 1,6-linked α-and β-disaccharides (15, 14) of this sugar which were unknown until now.
    Notes: Die Koenigs-Knorr-Reaktion zwischen zwei Derivaten der 2-Amino-2-desoxy-D-glucose (3 und 4) wurde in Abhängigkeit vom Lösungsmittel untersucht. Die höchste Ausbeute an α-Disaccharid 5 konnte in einem Gemisch von Toluol und 1,2-Dimethoxyäthan erhalten werden. Die Kondensation zweier Derivate der 3-Amino-3-desoxy-D-glucose (11 und 13) unter ähnlichen Bedingungen führte zu den bisher unbekannten 1,6-verknüpften α- und β-Disacchariden (15 bzw. 14) dieses Zuckers.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 1188-1194 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Di- and Polyamino Sugars, XX. Synthesis of 2,3,4,6-Tetraamino-2,3,4,6-tetradeoxy-D-glucoseThe title compound has been prepared by introduction of two amino functions into the molecule of 2,3-diamino-2,3-dideoxy-D-glucose. Instead of the free sugar we obtained mainly the pyrrolidine 17.
    Notes: Die Titelverbindung wurde durch Einführung von zwei Stickstoff-Funktionen in die 2,3-Diamino-2,3-didesoxy-D-glucose dargestellt. Anstelle des freien Zuckers erhielten wir hauptsächlich das Pyrrolidin 17.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 107 (1974), S. 2585-2600 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Glycosides of Amino Sugars, V. Synthesis of Disaccharides of 2,3-Diamino-2,3-dideoxy-D-glucose, IOn dinitrophenylation with 1-fluoro-2,4-dinitrobenzene 2,3- diamino-2,3-dideoxy-D-glucose preponderantly yields the 1,2,3-trisubstituted derivative 5 the structure of which was proved by several methods. The N,N′-dinitrophenyl derivative 2 could be obtained from the glycoside 17 and was converted into the bromide 19. On reaction with a derivative of 3-azido-3-deoxy-D-glucose (24) 19 yielded the α- and β-disaccharides 25 and 27.
    Notes: 2,3-Diamino-2,3-didesoxy-D-glucose-dihydrochlorid liefert bei der Dinitrophenylierung mit 1-Fluor-2,4-dinitrobenzol überwiegend das 1,2,3-Trisubstitutionsderivat 5. dessen Konstitution auf mehreren Wegen bewiesen wurde. Das über das Glycosid 17 erhältliche N,N′-Dinitrophenylderivat 2 konnte in das Bromid 19 übergeführt und dieses mit einem Derivat der 3-Azido-3-desoxy-D-glucose 24 zum α- und β-Disaccharid 25 bzw. 27 verknüpft werden.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 582 (1990), S. 128-130 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zur Struktur von In5Br7Die Kristallstruktur von In5Br7, die in der Raumgruppe Ce (monoklin, a = 18,688(2); b = 18,602(2); c = 19,217(2) Å; β = 104,19(1)°; Z = 16) verfeinert wurde, muß richtig in der Raumgruppe C2/c beschrieben werden. Revidierte Lageparameter, der Madelunganteil der Gitterenergie, MAPLE, und einige wichtige Abstände werden angegeben.
    Notes: The crystal structure of In5Br7, which was originally described and refined in space group Cc (monoclinic: a = 18.688(2), b = 18.602(2), c = 19.217(2) Å, β = 104.19(1)°, Z = 16), is correctly described in space group C2/c. Revised coordinates, electrostatic parts of the lattice energy (MAPLE), and some important distances are given.
    Additional Material: 3 Tab.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 582 (1990), S. 143-150 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure and Electrical Conductivity of Ag3YCl6The reaction of YCl3 with an AgCl single crystal in a sandwich diffusion couple (365°C, 140 h) leads to a product layer of single crystalline Ag3YCl6. Single crystals of low-temperature Ag3YCl6-I transform to high-temperature Ag3YCl6-II at 350°C. Ag3YCl6-I (a = 686.69 pm, c = 1830.5 pm, trigonal, R3, Z = 3) is isostructural with Na3GdCl6-I. The compound shows structural disorder with two Ag+-ions occupying statistically half of four octahedral interstices. The specific electrical conductivity of Ag3YCl6 was investigated from room temperature up to the melting point (T = 413°C). The transition from low to high-temperature Ag3YCl6 is accompanied by a sharp increase of the conductivity.
    Notes: Polykristallines YCl3 reagiert mit einem Einkristall von AgCl in Sandwich-Anordnung (365°C, 140 h) an der Kontaktfläche zu einer Produktschicht aus vorwiegend einkristallinem Ag3YCl6. Die daraus isolierten Einkristalle der Tieftemperaturform (Ag3YCl6-I) wandeln sich bei 350°C in eine Hochtemperaturform (Ag3YCl6-II) um. Die Kristallstruktur von Ag3YCl6 I (a = 686,69 pm, c = 1 830,5 pm, trigonal, R3, Z = 3) entspricht der des Na3GdCl6-I. Es liegt eine strukturelle Fehlordnung vor, wobei zwei Ag+-Ionen vier Oktaederlücken statistisch jeweils zur Hälfte besetzen. Die spezifische elektrische Leitfähigkeit von Ag3YCl6 wurde von Raumtemperatur bis oberhalb des Schmelzpunktes (T = 413°C) untersucht. Die Umwandlung der Tiefin die Hochtemperaturform ist von einem sprunghaften Anstieg der Leitfähigkeit begleitet.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complex Cation [(AnH)3(H2O)2]3+ in Trianilinium-tri-μ-chloro-nonachloro-trirhenate(III)-dihydrate, (AnH)3[Re3(μ-Cl3)Cl9] · 2 H2ODark red single crystals of trianilinium-tri-μ-chloro-nonachloro-trirhenate(III)-dihydrate grow from hydrochloric acid solutions of “ReCl3 · 2 H2O” and anilinium hydrochloride. An important feature of the crystal structure (monoclinic, P21/a, Z = 4, a = 1595.98(12), b = 1594.53(11), c = 1319.65 (9) pm, β = 100.20(1)°, Vm = 497.68(1) cm3 mol-1) are complex cations of the composition [(AnH)3(H2O)2]3+. The N—O- and O—O-distances in the hydrogen bonded cation [(AnH)3(H2O)2]3+ are 281 to 289 pm and 287, respectively. The cationic layers build up corrugated layers parallel (010) and leave two channels in the [010] direction per unit cell into which the anionic clusters, [Re3Cl12]3-, are embedded.
    Notes: Dunkelrote Einkristalle von Trianilinium-tri-μ-chloro-nonachloro-tri-rhenat(III)-dihydrat erhält man aus salzsauren Lösungen von „ReCl3 · 2 H2O“ und Aniliniumhydrochlorid. In der Kristallstruktur (monoklin, P21/a, Z = 4, a = 1595,98(12), b = 1594,53(11), c = 1319,65(9) pm, β = 100,20(1)°, Vm = 497,68(1) cm3 mol-1) sind drei Aniliniumkationen und zwei Wassermoleküle über Wasserstoff-Brückenbindungen zu einem komplexen Kation [(AnH)3(H2O)2]3+ verbunden. Innerhalb dieser Baugruppe findet man N—O-Bindungsabstände zwischen 281 und 289 pm sowie einen O—O-Abstand von 287 pm. Die komplexen Kationen [(AnH)3(H2O)2]3+ sind parallel (010) zu gewellten Schichten angeordnet, die je Elementarzelle zwei Kanäle in Richtung [010] freilassen, in die die Anionen [Re3Cl12]3- eingebettet sind.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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