Poly[μ3-chlorido-μ2-chloridodichlorido(μ-dimethyl sulfoxide-κ2O:S)(dimethyl sulfoxide-κO)(μ-pyrimidine-κ2N:N′)ruthenium(III)sodium]

The title complex, [NaRuCl4(C4H4N2)(C2H6OS)(2)] (n) , is the sodium salt of monoanionic octahedral [RuIIICl4(pyrimidine)(DMSO)]- in which the sulfur-bound dimethyl sulfoxide (DMSO) and pyrimidine ligand are oriented trans to one another on the RuIII atom. The average of the four Ru-Cl bond lengths is 2.355 (15) A, and the Ru-S and Ru-N bond lengths are 2.2853 (3) and 2.1165 (11) A, respectively. The complex forms a chain, with a six-coordinate sodium ion bridging the ruthenium(III) units. The sodium cation is coordinated by cis-chloride ligands on ruthenium [Na-Cl = 2.9576 (7) and 2.6988 (7) A], chloride and DMSO ligands from the ruthenium complexes related by inversion [Na-Cl and Na-O = 2.8888 (7) and 2.2623 (12) A, respectively], a nitrogen ligand from the pyrimidine of the tetrachloridoruthenium(III) complex related by the twofold rotation axis [Na-N = 2.5224 (14) A] and an oxygen-bound DMSO [Na-O = 2.3165 (12) A].