Perfluorovinyl complexes of the nickel group

Abstract

Treatment of bis(triethylphosphine)nickel dichloride with perfluorovinylmagnesium bromide affords trans-(Et₃P)₂Ni(CF:CF₂)Br and trans-(Et₃P)₂Ni(CF:CF₂)₂. Similarly, from cis-bis(triethylphosphine)platinum dichloride, a mixture of the compounds trans-(Et₃P)₂Pt(CF:CF₂Br) and cis-(Et₃P)₂Pt(CF:CF₂)Br is obtained. Perfluorovinyllithium reacts with cis-bis(triethylphosphine)platinum dichloride to give cis-(Et₃P)₂Pt(CF:CF₂)₂, and with trans-bis(triethylphosphine)palladium dichloride to give trans-(Et₃P)₂Pd(CF:CF₂)₂. Some related complexes containing the Pt·CCl:CF₂ group have been synthesised. The ¹⁹F n.m.r. spectra of the new compounds are discussed.