A new monoclinic polymorph of dichloridotetrakis(dimethyl sulfoxide)ruthenium(II)

Abstract

The title compound, cis,fac-dichloridotetrakis(dimethyl sulfoxide)-κ3S,κO-ruthenium(II), [RuCl2(C2H6OS)4], was obtained from newly synthesized ruthenium complexes of 3-amino-2-chloropyridine. The Ru atom has a distorted octahedral coordination with two cis-oriented chloride ligands and four dimethyl sulfoxide ligands. Three of the sulfoxide ligands are S-bonded in a fac configuration, while the fourth is O-bonded. The title compound represents a new, and fourth, polymorph of the complex. Two other monoclinic forms and an orthorhombic modification have been reported previously.