title: Synthesis, mechanism of formation, and catalytic activity of Xantphos nickel π-complexes.
abstract: A general synthetic route to the first Xantphos nickel alkyne and alkene complexes has been discovered. Various Ni π-complexes were prepared and characterized. NMR experiments indicate benzonitrile undergoes ligand exchange with a Xantphos ligand of (Xant)2Ni, a compound that was previously believed to be unreactive. The Ni π-complexes were also shown to be catalytically competent in cross coupling and cycloaddition reactions. (Xant)2Ni is also catalytically active for these reactions when activated by a nitrile or coordinating solvent.
authors.affiliation: Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112, USA. louie@chem.utah.edu.
authors.forename: Nicholas D
authors.initials: ND
authors.lastname: Staudaher
authors.forename: Ryan M
authors.initials: RM
authors.lastname: Stolley
authors.forename: Janis
authors.initials: J
authors.lastname: Louie
mesh_terms: D000475:Alkenes / Q000138:chemical synthesis / Q000737:chemistry; D000480:Alkynes / Q000138:chemical synthesis / Q000737:chemistry; D002384:Catalysis; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D061565:Cycloaddition Reaction; D008958:Models, Molecular; D009532:Nickel / Q000737:chemistry*; D010720:Phosphines / Q000138:chemical synthesis / Q000737:chemistry*; D014966:Xanthenes / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000475:Alkenes; D000480:Alkynes; D056831:Coordination Complexes; D010720:Phosphines; D014966:Xanthenes; D009532:Nickel; C519861:xantphos