The reaction of NO+ with some anions of osmium and ruthenium: synthesis and X-ray characterization of [H3Os4(CO)12(µ2-NO)] and [HRu4N(CO)11P(OMe)3]

Abstract

Reaction of [H₃Os₄(CO)₁₂]^– with NoBF₄ in CH₂Cl₂ gives the nitrosyl cluster [H₃Os₄(CO)₁₂(µ-NO)] in which the NO ligand has been shown by X-ray analysis to adopt a unique bonding mode bridging the wing-tips of a butterfly arrangement of metal atoms; the analogous reaction of [H₃Ru₄(CO)₁₂]^– with NoBF₄ gives instead the nitrido-cluster [HRu₄N(CO)₁₂] in low yield, whose formulation has been confirmed by an X-ray analysis of the derivative [Hru₄N(CO)₁₁P(OMe)₃].