Novel higher nuclearity osmium–antimony clusters by alkene- or diene-assisted cluster condensation

Abstract

The reaction of the cluster Os₃(μ-SbPh₂)(μ-H)(μ₃,η²-C₆H₄)(CO)₉, 1, with a number of alkenes and dienes led to cluster condensation to afford the novel cluster Os₅(μ₄-Sb)(μ-SbPh₂)(μ-H)₂(μ₃,η²-C₆H₄)(μ,η²-C₆H₄)(CO)₁₄, 3, as the major product, and another novel cluster Os₅(μ₄-Sb)(μ-SbPh₂)(μ-H)(μ₃,η⁶-C₆H₄)(CO)₁₄(Ph), 4. Reaction of 3 with the Group 15 ligands EPh₃ (E = P, As, Sb) afforded the corresponding monosubstituted derivatives Os₅(μ₄-Sb)(μ-SbPh₂)(μ-H)₂(μ₃,η²-C₆H₄)(μ,η²-C₆H₄)(CO)₁₃(EPh₃), 6.