Gold(III)pentafluorophenylarylazoimidazole: Synthesis and spectral (H, C, COSY, HMQC NMR) characterisation

Reaction of [AuIII(C6F5)3(tht)] with RaaiR in dichloromethane medium leads to [AuIII(C6F5)3 (RaaiR)] [RaaiR= p-R-C6H4-N=N-C3H2-NN-1-R, (1–3), R = H (a), Me (b), Cl (c) and R= Me (1), CH2CH3 (2), CH2Ph (3), tht is tetrahydrothiophen]. The nine new complexes are characterised by ES/MS as well as FAB, IR and multinuclear NMR (1H, 13C, 19F) spectroscopic studies. In addition to dimensional NMR studies as 1H, 1H COSY and 1H 13C HMQC permit complete assignment of the complexes in the solution phase.