Acta Cryst. (2009). E65, m1319  [ doi:10.1107/S1600536809039695 ]

Carbonylchlorido(1-methylsulfanylpenta-1,3-dien-1-yl-5-ylidene)bis(triphenylphosphane)osmium(II)

P. M. Johns, W. R. Roper, S. D. Woodgate and L. J. Wright

Abstract: The crystal structure of the title compound, [Os(C₆H₇S)Cl(C₁₈H₁₅P)₂(CO)], confirms the formulation as an osmabenzene. There is a slightly distorted octahedral coordination environment at the Os^II ion, with the triphenylphosphane ligands mutually trans and the chloride cis to the carbon bearing the -SMe substituent. Within the metallacyclic ring, the C-C distances are appropriate for aromatic bonds and the two Os-C distances are shorter than typical Os-C single bonds. The maximum deviation from the least-squares plane through the osmabenzene ring occurs for the carbon bearing the SMe substituent [0.1037 (18) Å].

Online 7 October 2009

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