Spectroscopic and electronic properties of 1-azaallylmetal(I) (M = Cu or Au) complexes; molecular structure of [{Au[µ-N(R)C(Ph)CR2]}2] (R = SiMe3)
Abstract
The reaction of [Li{N(R)C(Ph)CR2}(thf)] (R = SiMe3) with CuI or [AuCl(SMe2)] gave the stable metal complexes [{M[µ-N(R)C(Ph)CR2]}2] (M = Cu or Au) which were fully characterised by multinuclear NMR spectroscopy, mass spectrometry, microanalysis and for M = Au X-ray diffraction. Their spectroscopic and electrochemical properties are compared with the related copper complexes [{Cu[µ-N(R)C(But)C(H)R]}2], [Cu{N(R)C(But)C(H)R}(PPh3)] and [Li(dme)3][Cu{N(R)C(But)C(H)R}2].