title: Molybdenum complexes supported by mixed NHC/phosphine ligands: activation of N2 and reaction with P(OMe)3 to the first meta-phosphite complex.
abstract: Molybdenum(0) dinitrogen complexes, supported by the mixed NHC/phosphine pincer ligand PCP, exhibit an extreme activation of the N2 ligand due to a very π-electron-rich metal center. The low thermal stability of these compounds can be increased using phosphites instead of phosphines as coligands. Through an amalgam reduction of [MoCl3(PCP)] in the presence of trimethyl phosphite and N2 the highly activated and room-temperature stable dinitrogen complex [Mo(N2)(PCP)(P(OMe)3)2] is obtained. As a second product, the first transition metal complex containing the meta-phosphite ligand P(O)(OMe) originates from this reaction.
authors.affiliation: Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, 24098 Kiel (Germany), Fax: (+49) 0431-880-1520 www.ac.uni-kiel.de/tuczek.
authors.forename: Christian
authors.initials: C
authors.lastname: Gradert
authors.forename: Nadja
authors.initials: N
authors.lastname: Stucke
authors.forename: Jan
authors.initials: J
authors.lastname: Krahmer
authors.forename: Christian
authors.initials: C
authors.lastname: Näther
authors.forename: Felix
authors.initials: F
authors.lastname: Tuczek
mesh_terms: D002712:Chlorides / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D006571:Heterocyclic Compounds / Q000737:chemistry; D008024:Ligands; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry; D008968:Molecular Conformation; D008982:Molybdenum / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D010720:Phosphines / Q000737:chemistry*; D017905:Phosphites / Q000737:chemistry*
chemical_list: D002712:Chlorides; D056831:Coordination Complexes; D006571:Heterocyclic Compounds; D008024:Ligands; D010720:Phosphines; D017905:Phosphites; C030011:carbene; C009579:trimethyl phosphite; D008982:Molybdenum; C085192:molybdenum chloride; C044646:phosphine; D009584:Nitrogen; D008697:Methane
keywords: carbenes; molybdenum; nitrogen fixation; phosphane ligands; phosphorus ligands