Platinum hydrides containing silyl or germyl ligands. Crystal structure of trans-hydridosilylbis(tricyclohexylphosphine)platinum(II)

Abstract

The reaction between trans-[PtH₂{P(C₆H₁₁)₃}₂] and MH₃X (M = Si, X = H, Cl, or SiH₃; M = Ge, X = H) gives trans-[PtH(Y){P(C₆H₁₁)₃}₂](Y = MH₂X). Reaction intermediates, thought to be [PtH₃(Y)P{(C₆H₁₁)₃}₂], have been detected by ³¹P n.m.r. spectroscopy at low temperatures, except for X = H. Except when Y = Si₂H₅, the products have been isolated as air-stable crystalline solids, and the structure of the title complex has been determined. The crystals are monoclinic, space group P2₁/n, with a= 1 317.9, b= 1 277.7, c= 2 347.8 pm, and β= 106.96°. The structure has been solved with 4 165 diffractometer data and refined to R 0.049. No reaction is observed between MH₃X and trans-[PtH(Z){P(C₆H₁₁)₃}₂](Z = Cl or SiH₃) or between SiMeH₃ and trans-[PtH₂{P(C₆H₁₁)₃}₂].