rac-cis,cis-Dicarbonyl-dichlorido{1-[2-(diphenyl-phosphan-yl)benz-yl]-3-mesityl-imidazol-2-yl-idene}ruthenium(II) dichloro-methane monosolvate.

The Ru(II) atom in the title compound, [RuCl(2)(C(31)H(29)N(2)P)(CO)(2)]·CH(2)Cl(2), exhibits a distorted octahedral coordination environment. The bond angles of the cis substituents at the Ru(II) atom range from 82.72 (9) to 97.20 (3)°. This mol-ecule is of inter-est in the field of catalytic transfer hydrogenation.