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  • 1975-1979  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 454 (1979), S. 175-180 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure of Triaquo-(2-methyl-2,4-dicarboxy-thiazolidinato)cobalt(II)A new compound which was obtained as crystals in small amounts by attemps to get cysteinato complexes of cobalt proved to be the complex triaquo-(2-methyl-2,4-dicarboxythiazolidinato)cobalt(II) based on a X-ray structure analysis (1501 reflections, R = 0.039). The dianion of the thiazolidine dicarbonic acid acts in it as a terdentate ligand. The remaining three coordination positions of the cobalt ion are occupied by water molecules. The complex compound crystallizes orthorhombic, space group P212121 with a = 595.5, b = 1264.7, c = 1439.0 pm and Z = 4.
    Notes: Eine neue Verbindung, die bei Versuchen zur Darstellung von Cystein-Komplexen des Cobalts als Nebenprodukt in Form von Kristallen angefallen war, erwies sich auf Grund der Röntgenstrukturanalyse (1501 Reflexe, R = 0,039) als ein Triaquo-(2-methyl-2,4-dicarboxy-thiazolidinato)cobalt(II). Das Dianion der Thiazolidin-dicarbonsäure fungiert darin als ein dreizähniger Ligand. Die drei restlichen Koordinationsstellen des Cobalt-Ions werden von Wassermolekülen besetzt. Die Komplexverbindung kristallisiert orthorhombisch, Raumgruppe P212121, mit a = 595,5, b = 1264,7, c = 1439,0 pm und Z = 4.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 454 (1979), S. 134-144 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Cobalt(II) Hydrogenarsenate Monohydrate. Preparation and Crystal StructureCo[H2O|HOAsO3] was prepared by heating of As2O5, CoSO4 · 7 H2O and H2O at 150°C in a sealed tube and investigated by X-rays. The compound crystallizes triclinic, space group P¯1 with a = 786.5, b = 1569.9, c = 671.9 pm, α = 94.25, β = 96.89, γ = 90.28° and Z = 8.The structure contains chains of edge-shared CoO6 octahedra connected by AsO4 tetrahedra forming sheets. Two of such somewhat different sheets built up the whole structure. Based on the charge balance derived from the geometrical data and the IR spectra the occurrence of hydrogen bridges is discussed.
    Notes: Co[H2O|HOAsO3] wurde durch Erhitzen von As2O5, CoSO4 · 7 H2O und H2O auf 150°C im Autoklaven dargestellt und röntgenographisch untersucht. Die Verbindung kristallisiert triklin, Raumgruppe P¯1 mit a = 786,5, b = 1569,9, c = 671,9 pm, α = 94,25, β = 96,89, γ = 90,28° und Z = 8. Die Struktur enthält Ketten aus kantenverknüpften CoO6-Oktaedern, welche über AsO4-Tetraeder zu Schichten verknüpft sind. Zwei solche etwas verschiedenartige Schichten bilden die Gesamtstruktur. Anhand der aus den geometrischen Daten berechneten Ladungsbilanz und der IR-Spektren wird das Auftreten von Wasserstoffbrücken diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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