A novel type polymer-bound tridentate 2S-N ligand platinum complex

fumed silica-poly-γ-bis-N

N-(β-methylmercaptoethyl) amino propyl silsesquioxane platinum complex

has been synthesized from N

N-bis (β-methylmercaptoethyl) y-(triethoxysilyl) propylamine by hydrolysis of the monomer or cohydrolysis of it with dodecyltriethoxysilane and immobilization on fumed silica

followed by reacting with ponssium chloroplatinite in acetone under Ar atmosphere. It was found that they are efficient catalysts for the hydrosilylation of olefins with triethoxysilane. The influences of the nature of substrate

reaction temperature

the amount of complex used on the catalytic activity

as well as the recovery and reused property of them were investigated.