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Studies in transition metal chemistry. Part II: The addition of organic halides to bis‐cyclopentadienyl vanadium (II)

1961; Royal Netherlands Chemical Society; Volume: 80; Issue: 8 Linguagem: Inglês

10.1002/recl.19610800805

1878-7096

H. J. DE LIEFDE MEIJER, M. J. Janssen, G. J. M. van der Kerk,

Metal complexes synthesis and properties

Abstract Several organic halides were found to add to Cp 2 V (II) . The reactions of benzyl chloride, ethyl bromide and methyl iodide were studied in detail. Instead of the expected compound Cp 2 V (IV) RX (X = Cl, Br, I) the tervalent halide Cp 2 V (III) X was formed exclusively in the presence of excess alkyl halide. When excess Cp 2 V (II) was present, however, both Cp 2 V (III) X and Cp 2 V (III) R were found as reaction products. The following reaction equations are proposed: a) Cp 2 V + RX → [Cp 2 VRX]; b) [Cp 2 VRX] + Cp 2 V → Cp 2 VR + Cp 2 VX; c) Cp 2 VR + + RX (excess) → Cp 2 VX + R 2 . The compounds Cp 2 V (III) R and Cp 2 V (III) X were synthesized and the occurrence of reaction c) was demonstrated.