A new heteronuclear trirutheniumcobalt cluster containing a bulky phosphine ligand, [CoRu₃(μ-H)₃(μ-CO)(CO)₁₀(PCy₃)]

A mixed tetranuclear cluster of ruthenium and cobalt, namely undeca­carbonyl-tri-μ-hydrido-(tri­cyclo­hexyl­phosphine)­tri­rutheniumcobalt, [CoRu₃H₃(CO)₁₁(C₁₈H₃₃P)], has been synthesized by reaction between Co₂(CO)₈ and the electron-deficient cluster [Ru₃H₂(CO)₆(PCy₃)₃]. The compound was characterized, both spectroscopically and crystallographically. The molecular structure of [CoRu₃(μ-H)₃(μ-CO)(CO)₁₀(PCy₃)] shows a tetrahedral metal core. The tris­(cyclo­hexyl)­phosphine ligand is attached in an axial position to one of the Ru atoms of the basal face.