Bis(μ-di­phenyl­phosphan­yl)bis­[(tri­methyl­phosphane)cobalt(I)](Co—Co)

The title compound, [Co₂{P(C₆H₅)₂}₂(C₃H₉P)₄], was obtained by the addition of di­phenyl­phosphane to a solution of Co(CH₃)(C₃H₉P)₄. The dinuclear complex mol­ecule exhibits inversion symmetry with the inversion centre located between the two Co^I atoms. The short Co—Co distance of 2.3670 (8) Å lies within the range of metal–metal double bonds. As a result of inversion symmetry, the four-membered Co₂P₂ core is rigorously planar, and the two bridging P(C₆H₅)₂-ligands and the terminal C₃H₉P ligands are arranged in a pseudo-tetra­hedral fashion about the Co^I atom.