Abstract

A novel fumed silica-supported poly-4-oxa-6,7-bis(diphenylarsino)heptylsiloxane platinum complex was prepared by treatment of poly-4-oxa-6,7-dichloroheptylsiloxane with potassium diphenylarsenide in THF and then reaction with potassium chloroplatinite. It was found that the title complex is an efficient catalyst for hydrosilylation of olefins with triethoxysilane. The polymeric platinum catalyst is stable and can be reused several times without noticeable loss of activity.

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