title: N-heterocyclic carbene stabilized copper- and silver-phenylchalcogenolate ring complexes.
abstract: The ligation of a N-heterocyclic carbene (NHC) to group 11 metal salts (Cu, Ag) was explored as an alternative to PR(3) ligands for the formation of copper- and silver-chalcogenolate cluster complexes. AgOAc and CuCl salts ligate with the NHC 1,3-di-isopropylbenzimidazole-2-ylidene ((i)Pr(2)-bimy) forming [Ag(OAc)((i)Pr(2)-bimy)] 1, [Ag(OAc)((i)Pr(2)-bimy)(2)] 2, [CuCl((i)Pr(2)-bimy)](2)3 and [CuCl((i)Pr(2)-bimy)(2)] 4 depending on the ratio of ligand to metal used. These have been characterized via spectroscopic and crystallographic methods. Complexes 1 and 3 were reacted with S(Ph)SiMe(3) and Se(Ph)SiMe(3) to form the polynuclear metal-chalcogenolates [Ag(4)(μ-EPh)(4)((i)Pr(2)-bimy)(4)] (5, E = S; 6, E = Se) and [Cu(3)(μ-EPh)(3)((i)Pr(2)-bimy)(3)] (7, E = S; 8, E = Se) in good yields. The structures of 5-8, as determined by single crystal X-ray crystallography, are described.
authors.affiliation: Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada.
authors.forename: Will J
authors.initials: WJ
authors.lastname: Humenny
authors.forename: Stefan
authors.initials: S
authors.lastname: Mitzinger
authors.forename: Chhatra B
authors.initials: CB
authors.lastname: Khadka
authors.forename: Bahareh Khalili
authors.initials: BK
authors.lastname: Najafabadi
authors.forename: Isabelle
authors.initials: I
authors.lastname: Vieira
authors.forename: John F
authors.initials: JF
authors.lastname: Corrigan