title: Transition Metal Complexes Coordinated by Water Soluble Phosphane Ligands: How Cyclodextrins Can Alter the Coordination Sphere?
abstract: The behaviour of platinum(II) and palladium(0) complexes coordinated by various hydrosoluble monodentate phosphane ligands has been investigated by31P{¹H} NMR spectroscopy in the presence of randomly methylated β-cyclodextrin (RAME-β-CD). This molecular receptor can have no impact on the organometallic complexes, induce the formation of phosphane low-coordinated complexes or form coordination second sphere species. These three behaviours are under thermodynamic control and are governed not only by the affinity of RAME-β-CD for the phosphane but also by the phosphane stereoelectronic properties. When observed, the low-coordinated complexes may be formed either via a preliminary decoordination of the phosphane followed by a complexation of the free ligand by the CD or via the generation of organometallic species complexed by CD which then lead to expulsion of ligands to decrease their internal steric hindrance.
authors.affiliation: University of Artois, CNRS, Centrale Lille, ENSCL, University of Lille, UMR 8181, Unité de Catalyse et de Chimie du Solide (UCCS), F-62300 Lens, France. michel.ferreira@univ-artois.fr.
authors.forename: Michel
authors.initials: M
authors.lastname: Ferreira
authors.affiliation: University of Artois, CNRS, Centrale Lille, ENSCL, University of Lille, UMR 8181, Unité de Catalyse et de Chimie du Solide (UCCS), F-62300 Lens, France. herve.bricout@univ-artois.fr.
authors.forename: Hervé
authors.initials: H
authors.lastname: Bricout
authors.affiliation: University of Artois, CNRS, Centrale Lille, ENSCL, University of Lille, UMR 8181, Unité de Catalyse et de Chimie du Solide (UCCS), F-62300 Lens, France. sebastien.tilloy@univ-artois.fr.
authors.forename: Sébastien
authors.initials: S
authors.lastname: Tilloy
authors.affiliation: University of Artois, CNRS, Centrale Lille, ENSCL, University of Lille, UMR 8181, Unité de Catalyse et de Chimie du Solide (UCCS), F-62300 Lens, France. eric.monflier@univ-artois.fr.
authors.forename: Eric
authors.initials: E
authors.lastname: Monflier
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009943:Organophosphorus Compounds / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry; D010720:Phosphines / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry; D013451:Sulfonic Acids / Q000737:chemistry*; D028561:Transition Elements / Q000737:chemistry; D014867:Water; D047392:beta-Cyclodextrins / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D008024:Ligands; D009943:Organophosphorus Compounds; D010720:Phosphines; D013451:Sulfonic Acids; D028561:Transition Elements; D047392:beta-Cyclodextrins; C400058:triphenylphosphine-3,3',3''-trisulfonic acid; D014867:Water; D010984:Platinum; D010165:Palladium
keywords: TPPTS; cyclodextrin; hydrosoluble organometallic complexes; palladium; platinum; supramolecular chemistry