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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 2273-2281 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Arene-tricarbonylchromium Complexes With Carbon DisulfidePhotolysis of the arene-tricarbonylchromium complexes ArCr(CO)3 (1a-c) (Ar = hexamethyl-benzene (a), mesitylene (b), benzene (c) in pentane solution in the presence of cyclooctene, followed by the reaction with carbon disulfide, leads to η2-CS2 complexes of the type ArCr(CO)2CS2 (2a-c) which can be desulfurized by trimethylphosphine to give the thiocarbonyl compounds ArCr(CO)2CS (3a-c). Decomposition of the CS2 complexes is facilitated if the charge density at the metal decreases, i. e. in the order 2a 〉 2b 〉 2c. In the case of Ar = methyl p-methylbenzoate (d), the analogous reaction with CS2 results in the formation of a binuclear complex [ArCr(CO)2]2CS2 (4) which contains a CS2 bridge. IR and 1H NMR spectra of the new complexes are described.
    Notes: Durch Photolyse der Aromat-tricarbonylchrom-Komplexe ArCr(CO)3 (1a-c) (Ar = Hexamethylbenzol (a), Mesitylen (b), Benzol (c) in Pentanlösung in Gegenwart von Cycloocten und nachfolgende Umsetzung mit Kohlenstoffdisulfid werden η2-CS2-Komplexe des Typs ArCr(CO)2CS2 (2a-c) erhalten, die sich mit Trimethylphosphan zu den Thiocarbonyl-Verbindungen ArCr(CO)2CS (3a-c) desulfurieren lassen. Die Beständigkeit der CS2-Komplexe sinkt mit abnehmender Ladungsdichte am Metall in der Reihe 2a 〉 2b 〉 2c. Im Falle Ar = p-Toluylsäure-methylester (d) entsteht bei der analogen Reaktion mit CS2 ein zweikerniger Komplexe [ArCr(CO)2]2CS2 (4), der eine CS2-Brücke enthält. IR- und 1H-NMR-Spektren der neuen Komplexe werden beschrieben.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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