Reaction of 1-(dimethylsilyl)-2-silylbenzene with platinum(0) phosphine complex: Isolation and characterization of the Si3–PtIV–H complex

Reaction of two equivalents of 1,2-C6H4(SiMe2H)(SiH3) with Pt(depe)(PEt3)2 (depe = Et2PCH2CH2PEt2) in toluene at room temperature afforded two novel isomeric {1,2-C6H4 -(SiMe2H)(SiH2)}{1,2-C6H4(SiMe2)(SiH2)}(H)PtIV (depe) complexes 1 and 2 in 5:1 ratio among eight possible isomers. Complex 1 is one of the few examples of tris(silyl)(hydrido)platinum(IV) complexes structurally characterized by single crystal X-ray analysis. The structure of complex 1 was unambiguously determined by multinuclear NMR and single crystal X-ray analysis.