fac-Aqua-dichloridotris(tetra-methyl-ene sulfoxide-κS)ruthenium(II).

The title mol-ecule, [RuCl(2)(C(4)H(8)OS)(3)(H(2)O)], is the isomer with the two chloride ligands cis and the three S-coordinated tetra-methyl-ene sulfoxide ligands facial relative to the Ru(II) center. The Ru-Cl distances are 2.4161 (7) and 2.4317 (7) Å, the Ru-O distance is 2.1540 (19) Å, and the Ru-S distances are in the range 2.2254 (8)-2.2657 (7) Å, with the shortest being that trans to the aqua ligand. The coordinated water mol-ecule forms inter-molecular hydrogen bonds with Cl and sulfoxide O atoms.