Acta Cryst. (2003). E59, m427-m428  [ doi:10.1107/S1600536803011577 ]

Orthorhombic cis-dichlorotetrakis(dimethyl sulfoxide)ruthenium(II) at 120  K

R. S. Srivastava and F. R. Fronczek

Abstract: Refinement of the structure of the Pccn polymorph of the title compound, [RuCl₂(C₂H₆OS)₄], using low-temperature data, has led to an increase in precision by a factor of 2-3 over the previous room-temperature results [Attia & Calligaris (1987). Acta Cryst. C43, 1426-1427] and those for the P2₁/n polymorph [Mercer & Trotter (1975). J. Chem. Soc. Dalton Trans. pp. 2480-2483; Alessio et al. (1988) Inorg. Chem. 27, 4099-4106]. The chloro ligands are cis, with Ru-Cl distances of 2.4165  (8) and 2.4352  (8)  Å, and the dimethyl sulfoxide (DMSO) ligands trans to them are S-bonded, with Ru-S distances of 2.2717  (8) and 2.2734  (9)  Å. One of the two mutually trans DMSO ligands is O-bonded, and the Ru-S distance trans to it is shortened, at 2.2480  (9)  Å.

Online 10 June 2003

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