title: A straightforward and generalizable synthetic methodology for the synthesis of ruthenium(II) complexes with thioether ligands from either Ru(III) or Ru(0) precursors.
abstract: The reaction of Ru(3)(CO)(12) in chloroform with thioether ligands after 25 min of irradiation leads to the formation of mononuclear ruthenium(II) complexes of the general formula fac-[Ru(CO)(3)Cl(2)(S)] (S = thioether) if monodentate ligands are introduced. In the case of chelating bidentate thioethers a complex of the formula all-cis-[Ru(CO)(2)Cl(2)(S[intersection]S)] is produced. If irradiation time is prolonged to 2.5 h mononuclear complexes of the composition trans-[RuCl(2)(S)(4)] or trans-[RuCl(2)(S[intersection]S)(2)] are observed. The use of tetrahydrothiophene (THT) in the latter case produces a dinuclear ruthenium(ii) complex of the formula [Ru(2)(CO)(2)Cl(4)(THT)(2)(mu-THT)(2)] which is the first structurally characterized neutral ruthenium complex with a bridging thioether ligand. Regardless of the used ligand complexes trans-[RuCl(2)(S)(4)] or trans-[RuCl(2)(S[intersection]S)(2)] are formed from the reaction of RuCl(3).3H(2)O with the corresponding thioether in the presence of NEt(3) and formaldehyde in excellent yields. Six new ruthenium complexes are characterized by X-ray diffraction.
authors.affiliation: Friedrich-Schiller-Universität Jena, Institute of Inorganic and Analytical Chemistry, August-Bebel-Str. 2, 07743, Jena, Germany.
authors.forename: Biplab K
authors.initials: BK
authors.lastname: Maiti
authors.forename: Helmar
authors.initials: H
authors.lastname: Görls
authors.forename: Olaf
authors.initials: O
authors.lastname: Klobes
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Imhof
mesh_terms: D002725:Chloroform / Q000737:chemistry; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D005557:Formaldehyde / Q000737:chemistry; D008024:Ligands; D008968:Molecular Conformation; D012428:Ruthenium / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*; D013876:Thiophenes / Q000737:chemistry
chemical_list: D056831:Coordination Complexes; D008024:Ligands; D013440:Sulfides; D013876:Thiophenes; D005557:Formaldehyde; C121030:tetrahydrothiophene; D012428:Ruthenium; D002725:Chloroform