Reactivity of bis(silyl) Platinum(II) complexes toward isocyanides: Preparation and structure of cis-[Pt(SiHPh2)(2)(CNR)(PR '(3))] (R = t-Bu, cyclohexyl, i-Pr; R ' = Me, Et)

摘要

Reactions of organic isocyanides CNR (R = t-Bu, cyclohexyl, i-Pr) with Pt(SiHPh2)(2)(PR'(3))(2) (R' = Me, Et) gave four novel bis(silyl) platinum(II) complexes Pt(SiHPh2)2(CNR)(PR'3) containing both phosphine and isocyanide ligands. X-ray crystallographic studies of the two complexes revealed a cis orientation of the diphenylsilyl ligands. Two different Pt-Si bond distances and J(Pt-H) values of the Si-H hydrogen signals strongly suggest a higher trans influence of the silyl ligand relative to the isocyanide. [References: 44]