title: Perfluoroalkylphosphine coordination chemistry of platinum: synthesis of (C2F5)2PPh and (C2F5)PPh2 complexes of platinum(II).
abstract: A 1:1 addition of Ph2PCl to an ethereal solution of C2F5Li (formed from the reaction of BuLi with C2F5Cl) yields Ph2P(C2F5)(abbreviated pfepp) (1). The introduction of a fluoroethyl group results in a phosphine with electronic characteristics that approximate phosphites, bridging the electronic gap between traditional donor phosphine ligands and more electrophilic phosphine ligands like PhP(C2F5)2 (2). The pfepp ligand 1 is isolated as a high boiling liquid, which crystallizes upon standing at room temperature in an inert atmosphere. A series of Pt(II) complexes of the type trans-L2PtCl2 (L = pfepp 3; PhP(C2F5)2 4) have been prepared and structurally characterized by multinuclear NMR, IR and X-ray crystallography. The crystal structure of is the first example of a structurally characterized monodentate phosphine with a pentafluoroethyl pendant group.
authors.affiliation: Department of Chemistry, University of Memphis, Memphis, TN 38152, USA.
authors.forename: Jason D
authors.initials: JD
authors.lastname: Palcic
authors.forename: P N
authors.initials: PN
authors.lastname: Kapoor
authors.forename: Dean M
authors.initials: DM
authors.lastname: Roddick
authors.forename: R Gregory
authors.initials: RG
authors.lastname: Peters