Synthesis Of MCM-41-Supported Sulfur, Phosphine Rhodium And Platinum Complexes And Their Catalytic Properties In Hydrosilylation

This dissertation consists of two parts:Part one: MCM-41-supported mercapto rhodium(C1) and platinum(Ⅱ)(C2) compl- exes have been prepared fromγ-mercaptopropyltriethoxysilane via immobilization on MCM-41, followed by reacting with Me3SiCl and then reacting with rhodium chloride or potassium tetrachloroplatinate (Ⅱ), respectively. A MCM-41-supported thioether rhodium(C3) complex has also been synthesized from 3-(2-cyanoethylsul- fanyl)propyltriethoxysilane via immobilization on MCM-41, followed by reacting with Me3SiCl and rhodium chloride. These complexes were characterized by XRD, XPS and elemental analysis. It was found that all of these complexes C1, C2 and C3 are efficient catalysts for the hydrosilylation of most of the given olefins with (EtO)3SiH and can be recovered and reused many times without noticeable loss of activity.Part two: MCM-41-supported bidentate phosphine rhodium (C4) and bidentate phosphine platinum (Ⅱ)(C5) complexes have been conveniently synthesized from commercially available and cheapγ-aminopropyltriethoxysilane via immobilization on MCM-41, followed by reacting with diphenylphosphinomethanol and then reacting with rhodium chloride or potassium tetrachloroplatinate, respectively. Both complexes were characterized by XRD, XPS and elemental analysis.It was found that both complexes C4 and C5 are efficient catalysts for the hydrosilylation of most of the given olefins with (EtO)3SiH and can be recovered and reused many times without notice- able loss of activity...