Phosphine complexes of silylruthenium hydrides. Interaction of silicon hydride with RuH 2(PPh 3) 4, RuCl 2(PPh 3) 3, and RuHCl(PPh 3) 3

Abstract

The reaction of RuH 2(PPh 3) 4 with a variety of organosilicon hydrides, R 3SiH, gave the complexes RuH 3(SiR 3)(PPh 3) 3 where R 3Si  Et 3Si, EtMe 2Si, PhMe 2Si, Ph 3Si, Ph(MeO) 2Si, (EtO) 3Si, Et 2HSi, PhMeHSi, Ph 2HSi, cyclo-C 6H 11H 2Si, and PhH 2Si. Without solvent RuCl 2(PPh 3) 3 and RuHCl(PPh 3) 3 · C 6H 6 reacted with R 3SiH, where R 3Si  Cl 3Si, Cl 2MeSi, ClMe 2Si, Ph(MeO) 2Si, (EtO) 3Si, and (MeO) 3Si, to give RuH(SiR 3)PPh 3) 2; in benzene solution, however, hydrides such as ClMe 2SiH, Ph(MeO) 2SiH, Et 2SiH 2, Ph 2SiH 2, andcyclo-C 6H 11SiH 3, afforded RuH(SiR 3)(PPh 3) 3. RuCl 2(PPh 3) 3 was reduced by Et 3SiH, PhMe 2SiH, and EtMe 2SiH in organic solvents to give RuH(Cl(PPh 3) 3 · solvent. These silylruthenium hydride complexes were characterized by IR, NMR, and elemental analyses. The reactions of some silylruthenium hydride complexes were also investigated.