Michelet Bastien, Lebœuf David, Bour Christophe, Škoch Karel, Horký Filip, Štěpnička Petr, Gandon Vincent
Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, bâtiment 420, 91405, Orsay cedex, France.
Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 12840, Prague, Czech Republic.
Chempluschem. 2017 Mar;82(3):442-448. doi: 10.1002/cplu.201600562. Epub 2017 Jan 20.
Two new cationic dinuclear gold(I) complexes, [Au {μ(P,N)-5} ]X -in which X=NTf (7; Tf=trifluoromethanesulfonate) or SbF (8) and 2-(diphenylphosphanyl)benzonitrile (5) is a P,N-bridging donor-have been synthesized and structurally characterized. These air-stable species and their dimeric and polymeric analogues possessing 1'-(diphenylphosphanyl)-1-cyanoferrocene (1) as the bridging ligand, Au {μ(P,N)-1} and [Au{μ(P,N)-1}] [SbF ] , were used as precatalysts in various Au-mediated C-C and C-O bond-forming reactions. The reactivity of these complexes revealed the hemilabile nature of their P,N ligands. In the series of tested precatalysts, complex 8 exerted particularly high catalytic activity at low Au loading, even in reactions that usually require high amounts of gold catalyst to proceed efficiently under standard reaction conditions.
