Add time:08/23/2019         Source:sciencedirect.com

Reactions of VCl3 · 3 THF with RMgX (R  Ph, CH2SiMe3, C6F5) in various ratios have been studied. The stable compounds R3V · THF (R  CH2SiMe3, C6F5) were obtained. The chemical properties of R3V · THF, R4V · 2 L (R  CH2Ph, L  Et2O; R  C6F5, L  THF) and (Me3SiCH2)4V were investigated. Cleavage of the vanadium-carbonium σ-bond occurs in reactions with H2O, HCl and HgCl2. The insertion of carbon dioxide into the vanadiumcarbon σ-bond was investigated. A scheme for the derivatives of tri- and tetravalent vanadium is proposed. Oxidative addition to (C6F5)3V · THF by Ph3CCl and VCl3 · 3THF was also studied.

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