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  • 1
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and properties of, and Reactions with, Metal-Containing Heterocycles, XVII1) P = S-Containing Metallacyclopentadienes of Manganese and Rhenium - Crystal Structure of (OC)4MnSP(CH3)2C(CO2CH3)C(CO2CH3) and preparation of P-and S-isomeric HeteromanganacyclopentadienesThe unstable, three-membered systems (OC)4MPR12=S, which are interpreted as dissociation products of the inorganic heterocycles [-(OC)4MPR12S-]2 (1a,b), are trapped with activated alkynes of the type R2C≡CR2 with formation of the heterometallacyclopentadienes (CO)4MSP(R12)C(R2)C(R2) (2aS, 2b-e) F3C-C≡C-CF3 reacts with 1a to form also the P-isomeric heterocycle (CO)4MnP(CH3)2SC(CF3)C(CF3) (2aP). The IR spectra of 2aS and 2aP differ in the 5μ region. The P=S group behaves like an olefin. Towards hydrogenation agents the C=C bond in 2aS, 2b-d is resistent. 2b crystallizies in the monoclinic space group C2/c with Z = 8.
    Notes: Die instabilen, als Dissoziationsprodukte der anorganischen Heterocyclen [-(OC)4MPR12S-]2 (1a,b) (M = Mn, Re) aufzufassenden dreigliedrigen Systeme (OC)4MPR12=S lassen sich mit aktivierten Alkinen R2C ≡ CR2 unter Bildung der Heterometallacyclopentadiene ( CO)4MSP(R12C(R2)C(R2) (2aS, 2b-e) abfangen. Die Einwirkung von F3C-C≡C-CF3 auf 1a führt auch zu dem P-isomeren Heterocyclus (CO)4MnP(CH3)2SC(CF3)C(CF3) (2aP). 2aS und 2aP unterscheiden sich im 5-mU-Bereich der IR-Spektren. Die P = S-Gruppe verhält sich wie ein Olefin. Gegenüber Hydrierungsmitteln ist die C = C-Bindung in 2aS, 2b-d resistent. 2b kristallisiert in der monoklinen Raumgruppe C2/c mit Z = 8.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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