Bis([μ-bis-(diphenyl-arsino)methane-1:2κAs:As']nona-carbonyl-1κC,2κC,3κC-{tris-[4-(methyl-sulfan-yl)phen-yl]arsine-3κAs}-triangulo-triruthenium(0)) dichloro-methane monosolvate.

The asymmetric unit of the title triangulo-triruthenium compound, 2[Ru(3)(C(25)H(22)As(2))(C(21)H(21)AsS(3))(CO)(9)]·CH(2)Cl(2), consists of one triangulo-triruthenium complex mol-ecule and one half of a dichloro-methane mol-ecule which lies across a crystallographic inversion center, leading to the disorder of this mol-ecule over two positions of equal occupancy. The bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate arsine ligand bonds to the third Ru atom. All arsine ligands are equatorial with respect to the Ru(3) triangle. Each Ru atom carries one equatorial and two axial terminal carbonyl ligands. The three methyl-sulfanyl-substituted benzene rings make dihedral angles of 70.02†(8), 82.85†(9) and 89.49†(8)° with each other. The dihedral angles between the two phenyl rings are 78.25†(9) and 86.59†(9)° for the two diphenyl-arsino groups. In the crystal, weak inter-molecular C-H⋯π inter-actions are observed.