As an important intermediate for the production of silane coupling agent, γ-chloropropyl trichlorosilane is mainly obtained by Pt catalyzed hydrosilylation of allyl chloride and trichlorosilane. The industrial scale of γ-chloropropyl trichlorosilane has already exceeded 10000 tons. Despite great success achieved in this field, the hydrosilylation reaction is often accompanied with the low selectivity and high amounts of byproducts. Much progress in this hydrosilylation reaction has been made through the modulation of ligands on platinum complexes and their immobilization during the past decades. This paper reviews the progress in platinum complexes used as catalysts in the hydrosilylation reaction of trichlorosilane and allyl chloride,particularly focus on the impacts of ligands to soluble homogeneous platinum complex catalysts and supported platinum complex catalysts. Meanwhile, the progress in its reaction mechanism is presented. At last, some ideas are provided for future research.

Contents
1 Introduction
2 Homogeneous platinum complexes catalysts
2.1 Speier catalysts
2.2 Karstedt catalysts
2.3 Other homogeneous platinum complexes catalysts
3 Supported platinum complexes catalysts
3.1 Inorganic materials supported platinum complexes catalysts
3.2 Soluble polymer supported platinum complexes catalysts
3.3 Ionic liquids supported platinum complexes catalysts
4 Mechanism study
5 Conclusion