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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 589 (1990), S. 199-206 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Acetamidiniumhexafluorometallates of Silicon, Germanium, Tin, and TitaniumThe title compounds were crystallized from the aqueous solutions of their hexafluorometallate acids by adding acetamidinium fluoride. Their unit cells were determined and for [CH3C(NH2)2]2SiF6 the thermal decomposition was investigated thermoanalytically and its crystal structure was determined: s. g. C2/m, a = 9.886(4), b = 8.742(3), c = 7.650(3) Å, β = 127.02(2)°, layer structure, R = 0.04. The unit cell parameters of [CH3C(NH2)2]2GeF6 are a = 10.002(1), b = 8.870(2), c = 7.752(2) Å, β = 127.17(1)°, of [CH3C(NH2)2]2TiF6: a = 6.914(2), b = 6.709(1), c = 6.985(2) Å, α = 105.94(2)°, β = 111.95(4)°, γ = 94.30(2)°, of [CH3C(NH2)2]2SnF6: a = 6.980(2), b = 6.799(2), c = 7.018(3) Å, α = 105.40(3)°, β = 111.80(3)°, γ = 94.14(2)°.
    Notes: Die Titelverbindungen wurden aus den wäßrigen Lösungen der jeweiligen Hexafluorometallatsäuren nach Zugabe von Acetamidiniumfluorid auskristallisiert und ihre Gitterkonstanten bestimmt. Vom [CH3C(NH2)2]2SiF6 wurde der Abbau thermoanalytisch verfolgt und die Kristallstruktur bestimmt: R. Gr. C2/m, a = 9,886(4), b = 8,742(3), c = 7,650(3) Å, β = 127,02(2)°, Schichtstruktur, R = 0,04. Kristallographische Daten von [CH3C(NH2)2]2GeF6: a = 10,002(1), b = 8,870(2), c = 7,752(2) Å, β = 127,17(1)°, von [CH3C(NH2)2]2TiF6: a = 6,914(2), b = 6,709(1), c = 6,985(2) Å, α = 105,94(2)°, β = 111,95(4)°, γ = 94,30(2)°, von [CH3C(NH2)2]2SnF6: a = 6,980(2), b = 6,799(2), c = 7,018(3) Å, α = 105,40(3)°, β = 111,80(3)°, γ = 94,14(2)°.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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