Complexes of Ruthenium(III) with dimethylsulphoxide—I. [Ru2Cl6(DMSO)4], fac and mer isomers of [RuCl3(DMSO)3]: Versatile starting materials for the synthesis of ruthenium(III) complexes

Ruthenium(III) complexes containing dimethylsulfoxide or dimethylsulfide ligands, and a new route to trans-dichlorotetrakis(dimethylsulfoxide)ruthenium(II)

“…Martin, and H. A. Levy Results and discussion Synthetic procedures, and characterization of the Ru-containing species, excluding crystallographic data The synthetic procedures used for obtaining 1-4 follow as closely as possible those given by Poddar and co-workers (7,8) for reported isolation, respectively, of fac-R~Cl,(dmso)~, mer-RuC13(dmso),, RuBr3(dmso), (of unspecified configuration) and R~~C l~( d . m s , o )~.…”

“…The isolation of the thioether complexes is important in that Poddar and co-workers (7,8) where py = pyridine, phen = o-phenanthroline, bipy = 2,2'-bipyridyl, Hacac = acetylacetone, and pda = o-phenylenediamine. The theoretical elemental analyses for the corresponding dms complexes are little different from those of the sulfoxides and, as noted above, ir data, the other major criteria used by Poddar's group, are not unequivocal.…”

“…Extension of the synthetic methods for the isolation of Ru(II1)-sulfoxides was an obvious goal and, during our attempts to accomplish this using chemical oxidants with R~X~( d m s o )~ precursors (X = C1, Br) (6), reports by Poddar and co-workers (7,8) appeared, describing apparently simple routes to Ru(II1)-dmso complexes via the commercially available RuC13.3H20; some of the complexes reported were fac-and rner-R~Cl~(dmso)~, RuBr3(dmso)3, and a chloro-bridged dimer R U~C~~(~I~S O We repeated the synthetic procedures reported for these four complexes, but isolated instead, following the respective recipes,…”

Synthesis and Reactivity of Ru-, Os-, Rh-, and Ir-Halide−Sulfoxide Complexes

“…46 Indeed, a complex originally described as RuBr 3 (dmso-O) 3 47 was later demonstrated to be the dms complex mer-RuBr 3 (dms) 3 . 41 Early reports on synthetic routes to other scarcely characterized Ru(III)-halide-dmso compounds, such as [Ru(dmso) 5 Cl]Cl 2 and [Ru(dmso) 6 ]Cl 3 , 48,49 [Ru-(dmso) 6 ]Br 3 , 50 RuCl 3 (dmso-O) 3 , 51 fac-RuCl 3 (dmso-S) 3 and Ru 2 Cl 6 (dmso-S) 4 , 52 and RuCl 3 ‚2dmso, 53 were later demonstrated to be unreproducible, thus contributing to the initial confusion in this field. When carefully repeated, such procedures were found to yield either 1 or Ru(II)-halide-dmso (see below) and Ru(III)-halide-dms species (mer-RuCl 3 (dms) 3 and merRuBr 3 (dms) 3 ) 41 or mixtures of these products.…”

A trinuclear ruthenium(II) complex with rare S,O-bridging sulfoxide ligands

“…In the literature, incorrect structural assignments for complexes of Ru II and Ru III were often the result of either limited spectroscopic data and incomplete characterization or the formation of oligomers or polymeric materials. 1,15, 16 The relative importance of electronic and steric factors in determining the bonding modes of sulfoxides to soft or borderline centres, such as Ru II , Ru III and Rh III in multinuclear compounds, is still very relevant, especially after recognizing the ability of sulfoxide ligands to utilize both the softer S and harder O donor atoms simultaneously in bonding. [17][18][19] This paper reports the structure of a ruthenium complex which is representative of a trinuclear compound with sulfoxide ligands of intermediate size.…”