Hydroruthenation of prop-2-ynyltriphenylphosphonium bromide: synthesis, crystal structure and reactions of [RuBr(CHCHCH2PPh3)(CO)(PPh3)2]PF6

Abstract

The reaction of the complex [RuClH(CO)(PPh₃)₃] with prop-2-ynyltriphenylphosphonium bromide ([Ph₃PCH₂CCH]Br) followed by NH₄PF₆ provides the crystallographically characterised salt [RuBr(CHCHCH₂PPh₃)(CO)(PPh₃)₂]PF₆ which by virtue of the coordinative unsaturation at the ruthenium centre undergoes addition of the ligands CNC₆H₃Me₂-2,6, and CO to Ru and insertion of SO₂ into the Ru–C σ-bond.