III International Conference

PP-II-57THE CATALYTIC ACTIVITY OF PLATINUM COMPLEXES INHYDROSILYLATION REACTION. THE INFLUENCE OF COMPLEXSTRUCTUREKoviazin V.A., Isaev Yu.V., Tzareva A.V., Kopylov V.M.FSUE State Research Institute for Chemistry and Technology of Organoelement Compounds;“Penta-91” LTD, RussiaThe catalytic activity of mono- and binuclear platinum complexes with cyclicunconjugate dienes [(Me 2 ViSi) 2 O] 3 Pt 2 (I), [С 10 H 12 OEtPtOEt] 2 (II), [С 10 H 12 PtCl] 2 (III),С 8 H 12 PtS 2 Fe 2 (CO) 6 (IV) in the reaction of hydrosilylation has been investigated.The hydrosilylation of equal molar quantity of linear polymethylvinylsiloxanes andhydrosiloxanes which have different position of vinyl- and hydro group has been studied at 80 °С.It was found that polyhydrosiloxanes with the ≡Si-H end-group show higher activity inhydrosilylation process in the presence of all used catalysts.The comparison of rate for hydrosilylation of polymethylvinylsiloxane andpolyhydrosiloxane containing functional end-groups when the conversion of the reagentschanges from 10 to 60% show that activity of investigated complexes decreases in followingraw: I ~ III > II > IVThe reactivity of vinyl compound depends on the position of vinyl group, used catalystand hidrosilylation agent as well.267