SYNTHESIS AND CATALYTIC HYDROSILYLATION PROPERTY OF POLYSILOXANE-SUPPORTED MERCAPTOSELENAETHER PLATINUM OR RHODIUM COMPLEX

Silica-bound mercaptoselenaether-containing silsesquioxane and its plat-inum or rhodium complex were synthesized from γ-(2,3-epithiopropyl) propyltrimethoxysi-lane via ring-opening reaction with bis(2-hydroxyethyl) sclenide, followed by hydrolysisand immobilization on fumed silica, and then reacting with potassium chloroplatinite orrhodium chloride in acetone under nitrogen atmosphere. It was found that two noble metalcomplexes can catalyze the hydrosilylation of olefins with triethoxysilane effectively. Theinfluences of temperature, the amount of complex used, the nature of olefin on catalyticactivity were investigated.