Abstract
Ruthenium complexes [Ph 4 P][ trans- RuCl 4 (dmso-S) 2 ] ( 1 ) and [Ph 4 Sb(dmso-O)][ trans- RuCl 4 (dmso-S) 2 ] ( 2 ) have been synthesized by interaction of tetraphenylphosphonium and tetraphenylstibonium chlorides in dimethylsulfoxide. Their structures have been characterized. According to the X-ray data, the phosphorus atoms in cation 1 have a slightly distorted tetrahedral coordination (P–C 1.756(16)–1.794(19) Å, CPС 105.4(7)°–111.8(5)°), and the antimony atoms in cation 2 have a distorted trigonal-bipyramidal coordination with the dimethyl sulfoxide oxygen atom in the axial position (Sb–O 2.633(15) Å, Sb–C 2.094(15)–2.146(15) Å, CSbO 178.54(16)°). In the [ trans -RuCl 4 (dmso- S ) 2 ] – octahedral anion complexes 1 and 2 dimethylsulfoxide ligands are coordinated to the metal atoms by sulfur atoms (Ru–S 2.349(3), Ru–Cl 2.353(5), 2.355(3) Å and 2.332(3)–2.344(6), 2.336(4)–2.353(3) Å, respectively; angles SRuS and trans-ClRuCl constitute 180°.
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