Chemistry of the metal carbonyls. Part LXVI. Complexes derived from a carbonylosmium anion

Abstract

Reduction of dodecacarbonyltriosmium with sodium in liquid ammonia affords a cream solid which reacts with halides to afford complexes Os(CO)₄X₂(X = Me, H₃Ge, Ph₃Sn, Me₃Pb, and AuPPh₃) in good yield, as well as lower yield formation of hydrido-species Os(CO)₄(X)(H)(X = Me, H₃Ge, Me₃Sn). With dimethyltin dichloride the tin–osmium heterocycle [Os(CO)₄SnMe₂]₂ is formed, while protonation affords Os(CO)₄H₂.