title: Novel phospholyl(diphenylphosphino)methane-ruthenium complexes: unexpected non-assisted cis to trans isomerization of [RuCl2(κ(2)-P-P')2].
abstract: Using the unsymmetrical P-P' phospholyl(phosphino)methane ligand, complex cis-[RuCl(2)(κ(2)-P-P')(2)] is easily prepared from [RuCl(2)(DMSO)(4)]. The two phosphole-phosphorus atoms lie in the trans position to the two cis-chloro ligands. This complex slowly isomerizes spontaneously at 20 °C to the trans-[RuCl(2)(κ(2)-P-P')(2)] diastereoisomer where the two phosphole moieties are mutually trans, as well as the two chloro ligands and the two Ph(2)P moieties. DFT calculations show that this non-classical cis-trans isomerisation process requires a 3 kcal mol(-1) energy and involves the decoordination of a phosphole arm.
authors.affiliation: CNRS, LCC (Laboratoire de Chimie de Coordination), 205, route de Narbonne, F-31077 Toulouse, France.
authors.forename: Duc Hanh
authors.initials: DH
authors.lastname: Nguyen
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Daran
authors.forename: Sonia
authors.initials: S
authors.lastname: Mallet-Ladeira
authors.forename: Thomas
authors.initials: T
authors.lastname: Davin
authors.forename: Laurent
authors.initials: L
authors.lastname: Maron
authors.forename: Martine
authors.initials: M
authors.lastname: Urrutigoïty
authors.forename: Philippe
authors.initials: P
authors.lastname: Kalck
authors.forename: Maryse
authors.initials: M
authors.lastname: Gouygou
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D007536:Isomerism; D008024:Ligands; D008697:Methane / Q000737:chemistry*; D008968:Molecular Conformation; D009943:Organophosphorus Compounds / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D008024:Ligands; D009943:Organophosphorus Compounds; C580952:phospholyl(diphenylphosphino)methane; D012428:Ruthenium; D008697:Methane; D004121:Dimethyl Sulfoxide