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  • 1
    Publication Date: 1968-09-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 361 (1968), S. 169-179 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dodekammine-hexahydroxo-tetracobalt(III) complexes react with CN- forming red salts with the cation [Co3(NH3)8(OH)4(CN)2] 3+. The chloride, bromide, perchlorate, nitrate and dithionate of this cation have been prepared. The CN ligands are shown to be coordinated to the central Co atom; the OH groups form bridges.By reaction with NO-2 these complexes form orange coloured salts containing the cation [Co3(NH3)8(OH)2(NO2)2 (CN)2]3+, where the NO2 groups are in bridging positions. Of this cation, the chloride, bromide, nitrate and perchlorate have been prepared, the latter as a double salt with 1 mole of NaClO4.The absorption spectra of the new complexes and of the [Co4(NH3)12(OH)6]6+ ion in the infrared, visible and ultraviolet region are communicated and discussed.
    Notes: Dodekammin-hexahydroxo-tetrakobalt(III)-Komplexe reagieren mit CN- unter Bildung von roten Salzen mit dem Kation [Co3(NH3)8(OH)4(CN)2] 3+. Dargestellt wurden das Chlorid, Bromid, Perchlorat, Nitrat und Dithionat dieses Kations. Es wird gezeigt, daß die CN-Liganden sich am mittleren Co-Atom befinden, die OH-Gruppen fungieren als Brücken.Bei der Reaktion mit NO-2 entstehen aus diesen Komplexen organgefarbene Salze mit dem Kation [Co3(NH3)8(OH)2(NO2)2 (CN)2]3+, in welchem die NO2-Gruppen Brücken bilden. Von dieser Reihe wurden das Chlorid, Bromid und Nitrat dargestellt, ferner das Perchlorat, welches als Doppelsalz mit 1 Mol NaClO4 kristallisiert.Die Absorptionsspektren der neuen Komplexe und des [Co4(NH3)12 (OH)6]6+ im UR, Sichtbaren und UV werden angegeben und diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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