Disilylphosphido complexes M[P(SiPh3)2]2, Where M = Zn, Cd, Hg, and Sn: Effective Steric Equivalency of P(SiPh3)2 and N(SiMe3)2 Ligands

Abstract

The disilylphosphido complexes M[P(SiPh 3 ) 2 ] 2 , where M=Zn, Cd, Hg, and Sn, are prepared in 50-90% yields and isolated as crystalline solids or powders. Cryoscopic and NMR data indicate that the compounds are monomers in solution. The solid-state structure of Cd[P(SiPh 3 ) 2 ] 2 reveals a two-coordinate, linear coordination geometry about cadmium and distinctly pyramidal terminal P(SiPh 3 ) 2 ligands. Cd[P(SiPh 3 ) 2 ] 2 forms unstable adducts with pyridine and PMe 3