Gold(II) Trichloride Complex from Diclofenac‐Gold(III) Precursor

Abstract

In the conditions of electrospray ionization, a diclofenac-gold complex, namely the ion [DICÀ H + AuCl 3 ] À (DIC stands for diclofenac), was generated. According to the calculations, the most stable is the OÀ Au bond-containing structure. By subjecting the anion [DICÀ H + AuCl 3 ] À to the collision-induced dissociation, the loss of [DIC] * radical occurred and the open shell anion [AuCl 3 ] À was formed with the unprecedentedly high efficiency. The observed gas-phase behavior of the Au(III)diclofenac complex was analogical to that of the diclofenac complexes with metals (Fe(III) and Cu(II)), which are easily reduced in the gas phase, although the process Au(III)!Au(II) is rather unusual.