[Os₅(μ-H)₂(CO)₁₆]: a Second Crystal Form

The title compound, hexadecacarbonyl-1κ³C, 2κ³C, 3κ³C, 4κ⁴C5κ³C-di-μ-hydrido-1:2κ²H;1:3κ²H-pentaosmium(8 Os-Os), has been crystallized in a different crystal form from that reported previously [Guy & Sheldrick (1978). Acta Cryst. B34, 1725–1727]. The form reported here has crystallographic mirror symmetry and the packing arrangement in the crystal exhibits a different relative orientation of the molecules from the earlier structure.

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