N-heterocyclic carbene stabilized copper- and silver-phenylchalcogenolate ring complexes

作者：Humenny Will J; Mitzinger Stefan; Khadka Chhatra B; Najafabadi Bahareh Khalili; Vieira Isabelle; Corrigan John F^*

来源：Dalton Transactions, 2012, 41(15): 4413-4422.

DOI：10.1039/c2dt11998f

The ligation of a N-heterocyclic carbene (NHC) to group 11 metal salts (Cu, Ag) was explored as an alternative to PR3 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 (Pr-i(2)-bimy) forming [Ag(OAc)(Pr-i(2)-bimy)] 1, [Ag(OAc)(Pr-i(2)-bimy)(2)] 2, [CuCl(Pr-i(2)-bimy)](2) 3 and [CuCl(Pr-i(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)SiMe3 and Se(Ph)SiMe3 to form the polynuclear metal-chalcogenolates [Ag-4(mu-EPh)(4)(Pr-i(2)-bimy)(4)] (5, E = S; 6, E = Se) and [Cu-3(mu-EPh)(3)(Pr-i(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.

• 出版日期2012