Reactivity of Bis(silyl)platinum(II) Complexes toward Organic Isothiocyanates: Preparation and Structures of (Dithiocarbonimidato)- and (Diphenylsilanedithiolato)platinum(II) Complexes, cis-[Pt(S₂CNPh)L₂] and cis-[Pt(S₂SiPh₂)L₂] (L = PMe₂Ph, PEt₃; L-L = dppp)

Reactions of the bis(silyl)platinum(II) complexes [Pt(SiHPh₂)₂L₂] (L = PMe₃, PMe₂Ph, PEt₃; L-L = dppp (1,3-bis(diphenylphosphino)propane)) with organic isothiocyanates (RNCS) produced the dithiocarbonimidato complexes [Pt(S₂CNR)L₂] (R = Ph, p-tolyl, 2,6-Me₂C₆H₃, i-Pr) or the diphenylsilanedithiolato complexes [Pt(S₂SiPh₂)L₂], depending on the reaction temperature, the stoichiometry, and the nature of the phosphine ligand.