Osmium(II) and Ruthenium(II) complexes of tricyclohexylphosphine

Abstract

AbstractThe preparation of tricyclohexylphosphine complexes of osmium and ruthenium is reported. The reaction of K2OsCl6 or hydrated RuCl3 with tricyclohexylphosphine (PCy3) in 2‐methoxyethanol leads to the complexes MHCl(CO) (PCy3)2 with M = Os or Ru. Hydrogen‐deuterium exchange of PCy3 was observed in these complexes on reaction with deuterium gas and in the complexes prepared with deuteriated ethanol. Addition of pyridine (py) gives complexes of the formula MHCl(CO) (PCy3)2(py). Phosphonium compounds containing iron(III) and osmium(IV) halides as anions were prepared and characterised.