Preparation of silylplatinum complexes by interaction of organosilicon hydrides and carbonatobis(phosphine)platinum(II) complexes

Abstract

The carbonatoplatinum complexes [Pt(CO₃)L₂](L = PMe₂Ph, PEt₂Ph, PMePh₂, and PPh₃) react in benzene with the silicon hydrides SiHR₃(R₃= MePh₂) or SiH₂R₂(R₂= Ph₂ or MePh) to give the bis(silyl) complexes [Pt-(SiR₃)₂L₂] or [Pt(SiHR₂)₂L₂]. With R₃=(p-FC₆H₄)₃ and L = PMe₂Ph, the product, formed in low yield, is [PtH(SiR₃)L₂]. All the products have been shown to have cis configurations by ³¹P{¹H} n.m.r. spectroscopy. The dihydrides (Me₂HSi)₂O, (Ph₂HSi)₂O, (Ph₂HSiCH₂)₂, O-(Me₂HSi)₂C₆H₄, and O-Me₂HSi·C₆H₄·CH₂SiHMe₂ give chelated complexes such as [Pt(Me₂SiOSiMe₂)L₂].