Transformations of organosilanes by Pt(II) complexes with hemilabile P,N-chelating ligands

The article reviews the authorʹs own work to enhance the reactivity of Pt(II) complexes towards organosilanes by employing hemilabile chelating ligands R2NR′PPh2 (P∩N). Variation of the groups R and R′ allows to influence the reactivity of the complexes. (P∩N)PtMe2 reacts with HSiR3 to yield the complexes (P∩N)Pt(SiR3)Me and (P∩N)Pt(SiR3)2 along with MeSiR3 and methane. An excess of HSi(OMe)3 is catalytically converted into Si(OMe)4. P∩N-substituted Pt(II) complexes also catalyze the formation of disiloxanes from HSiR3 and CCl/SiH exchange reactions. The latter reaction yields dechlorinated hydrocarbons and chlorosilanes. Reaction of (P∩N)PtMe2 with ClSiPhMe2 results in the stoichiometric formation of Ph2Me4Si2, the Pt(IV) complex (P∩N)Pt(Cl)Me3 and the Pt(II) complex ((P∩N)Pt(Cl)Me. The corresponding bisphoshine complex (dppe)PtMe2 undergoes none of these reactions.