A series of platinum-acetylide-phosphine complexes were synthesized and their anti-sulfur-poisoning characteristics investigated. In comparison with Speier's and Karstedt's catalysts, the platinum-acetylide-phosphine complexes exhibited both higher catalytic activity and selectivity for the β-adduct for the hydrosilylation reactions under the same conditions. Furthermore, the complexes also exhibited a strong ability to resist to sulfur-poisoning. This indicated that the alkyne ligands containing the silyl group had a strong impact on the hydrosilylation reaction.

A series of polyethylene glycol-containing imidazolium-functionalized phosphine ligands (mPEG-im-PPh 2 ) were successfully synthesized and used in the rhodium-catalyzed hydrosilylation of olefins. The results indicate that the RhCl 3 /mPEG-im-PPh 2 catalytic system exhibits both excellent activity and selectivity for the β-adduct. In addition, the catalytic system may be recycled at least six times.