Reactions of low-valent metal complexes with fluorocarbons. Part XXVI. 1,1,1-Tris(diphenylphosphinomethyl)- and 1,1,1-tris(diphenylarsinomethyl)-ethane

Abstract

A series of nickel complexes N[graphic omitted]F(X)[Me·C(CH₂EPh₂)₃](X = F, H, or CF₃; E = P or As) containing tripodal ligands has been prepared. Treatment of P[graphic omitted]F₂(AsPh₃)₂ with 1,1,1 -tris(diphenylphosphinomethyl)ethane affords the related platinum compound [graphic omitted]F₂[Me·C(CH₂PPh₂)₃]. The complex [graphic omitted]F₂[Me·C(CH₂PPh₂)₃] does not react with tetrafluoroethylene whereas the arsine analogue readily yields [graphic omitted]F₂[Me·C(CH₂AsPh₂)₃] by a ring-expansion reaction. The latter exchanges the arsine ligand with Me·C(CH₂PPh₂)₃ or PPh₃ to give [graphic omitted]F₂[Me·C(CH₂PPh₂)₃] and [graphic omitted]F₂(PPh₃)₂, respectively.