Tetracarbonyl-1κ²C,2κ²C-μ-diphenylphosphido-P:P-μ-iodo-bis(triphenylphosphine)-1κP,2κP-diosmium(Os—Os) Benzene Solvate

In the title compound, [Os₂I(C₁₂H₁₀P)(C₁₈H₁₅P)₂(CO)₄].C₆H₆, the Os—Os bond distance is unusually short [2.781 (1) Å]. The two Os atoms are symmetrically bridged by both an iodo and a phosphido ligand. Two carbonyl groups and a triphenylphospine moiety complete the Os-atom coordination spheres. There are only two other reported structures with an iodo ligand bridging two Os atoms [Sutton, Nivin & Moss (1983). Inorg. Chim. Acta, 70, 207–210; Geoffroy, Rosenberg, Herlinger & Rheingold (1986). Inorg. Chem. 25, 2916–2919].

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