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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 3114-3126 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Trapping of Arsinidene and Stibinidene Intermediates: Addition of Lewis Bases to [(CO)5M]2XR (X=As, Sb; M=Cr, Mo, W)The compounds [(CO)5M]2XR (X=As, Sb) which contain the sextett ligand stabilised by π-interaction with the 16 electron fragments (CO)5M (M=Cr, Mo, W) form stable adducts [(CO)5M]2X(R)B with lewis bases |B. The formation of adducts may be used to demonstrate the intermediate existence of non-isolable arsinidene and stibinidene complexes [(CO)5M]2XR. By this method it is shown that Na2M2 (CO)10 reacts with RXCl2 to give arsinidene and stibinidene complexes in any case. These compounds may be isolated as stable adducts by lewis bases such as PR3, P(OMe)3, thiourea, RNH2, and THF. Syntheses and properties of adducts of this type are discussed here. The structure is documented by X-ray analyses of 1i, 3b, and 5a.
    Notes: Komplexe [(CO)5M]2XR (X=As, Sb), in denen die Sextettliganden durch π-Wechselwirkung mit den 16-Elektronenfragmenten (CO)5M (M=Cr, Mo, W) stabilisiert sind, bilden mit Lewisbasen |B stabile Addukte [(CO)5M]2X(R)B. Die Adduktbildung kann zum Nachweis des intermediären Auftretens von nicht isolierbaren Arsiniden- und Stibiniden-Komplexen [(CO)5M]2XR eingesetzt werden. Auf diese Weise gelingt es zu zeigen, daß bei Reaktionen von Na2M2(CO)10 mit RXCl2 stets Arsiniden- bzw. Stibiniden-Komplexe gebildet werden, die sich als stabile Addukte mit Lewisbasen wie PR3, P(OMe)3, Thioharnstoff, RNH2 und THF isolieren lassen. Synthese und Eigenschaften solcher Addukte werden besprochen. Ihr Bau wird durch Kristallstrukturen von 1i, 3b und 5a belegt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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