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  • 1
    ISSN: 0044-2313
    Keywords: Thiolato ; selenolato ; bromo ; iodo complexes of vanadium(V) ; 1H, 51V NMR ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and NMR Spectroscopic Studies of tert-Butylimino-cyclopentadienylvanadium(V) Compounds tC4H9N=VCpX2 (X=SR, SeC6H5, Br, I)Syntheses of the cyclopentadienylvanadium(V) compounds tC4H9N=VCpX2 (X=SR, SeC6H5, Br, I) tC4H9N=VCp (StC4H9) and tC4H9N=VCp[S—(CH2)3—S] (4) are described starting from tC4H9N=VCpCl2. tC4H9N=VCl3 reacts with BBr3 and BI3 by halogen exchange forming the trihalogenides tC4H9N=VX3 (X=Br, I). All compounds obtained are characterized by 1H and 51V NMR spectroscopy. 4 has been found by X-ray diffraction analysis to be a distorted tetrahedral vanadium complex with a chair conformation of the VS2C3-ring.
    Notes: Die Darstellung der Cyclopentadienyl-vanadium(V)-Verbindungen tC4H9N=VCpX2 (X=SR, SeC6H5, Br, I), tC4H9N=VCp(StC4H9) und tC4H9N=VCp[s—(CH2)3—S] (4) wird beschrieben; als Ausgangsverbindung wird tC4H9N=VCpCI2 eingesetzt. tC4H9N=VCl3 reagiert mit BBr3 und Bl3 unter Halogenaustausch und Bildung der Trihalogenide tC4H9N=VX3 (X=Br, I). Alle dargestellten Verbindungen werden 1H- und 51V-NMR-spektroskopisch charakterisiert. Die Röntgenstrukturanalyse von 4 zeigt das Vanadiumatom in einer verzerrt tetraedrischen Anordnung der Liganden; der VS2C3-Ring liegt in der Sesselkonformation vor.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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