Detailed structural, spectroscopic, and electrochemical trends of halido mono- and Bis(NHC) complexes of Au(I) and Au(III)

Abstract

A complete series of ten Au(I) and Au(III) NHC complexes of the general formulas [AuIX(iPr2-bimy)] (1-3, X = Cl, Br, and I), [AuI(iPr2-bimy)2]BF 4 (4), [AuIIIX3(iPr 2-bimy)] (5-7, X = Cl, Br, and I) and trans-[AuIIIX 2(iPr2-bimy)]BF4 (8-10, X = Cl, Br, and I) bearing the iPr2-bimy ligand, and all three common halido ligands have been synthesized and fully characterized. Detailed trends in their NMR and UV-Vis spectroscopic properties have been studied, and their electrochemical behavior have been probed by cyclic voltammetry. The solid state molecular structures of all new complexes determined by single crystal X-ray diffraction are also described. © 2013 American Chemical Society.