Synthesis of a novel fumed silica-supported bidentate arsine rhodium complex and its catalytic behavior in the hydrosilylation of olefins with triethoxysilane

A novel fumed silica-supported bidentate arsine rhodium complex was prepared by treatment of poly-4-oxa-6,7-dichloroheptylsiloxane with potassium diphenylarsenide in THF and then reaction with rhodium chloride. It was found that the title complex is an efficient catalyst for hydrosilylation reaction of olefins with triethoxysilane and can be reused several times without noticeable loss of activity.

A novel fumed silica-supported poly-4-oxa-6,7-bis(diphenylarsino)heptylsiloxane rhodium complex was prepared by treatment of poly-4-oxa-6,7-dichloroheptylsiloxane with potassium diphenylarsenide in THF and then reaction with rhodium chloride. It was found that this complex is an efficient catalyst for hydrosilylation of a variety of olefins with triethoxysilane. Figure optionsDownload as PowerPoint slide