Control of Si–C bond cleavage at carbon α to phosphorus. Suppression of facile protodesilylation of PPh2CH2SiMe2H by complexation through phosphorus to ruthenium and the X-ray crystal and molecular structure of [Ru(η6-p-cymene)Cl2(PPh2CH2SiMe2OH)]

Abstract

Facile cleavage of the Si–C bond α to P in Ph₂PCH₂SiMe₂H which is induced by HY (Y = OH, OMe, or Cl) is suppressed on complexation at Ru in [Ru(η⁶-cym)Cl₂(PPh₂CH₂SiMe₂H)](cym =p-cymene); instead the latter reacts where Y = OH to afford the silanol complex [Ru(η⁶-cym)Cl₂(PPh₂CH₂SiMe₂OH)] which has been structurally characterized by X-ray diffraction.