Abstract
Abstract The oxidation states and structures of a series of cyclometalated gold complexes derived from oxidative addition reactions of the digold(I) complex [Au2(μ-C6H3-2-PPh2-6-Me)2] have been determined by 197Au Mössbauer spectroscopy. The spectra for the binuclear gold(I)/gold(I) and gold(II)/gold(II) complexes indicate the presence of equivalent gold atoms, whereas the gold(I)/gold(III) and gold(III)/gold(III) spectra show signals due to two inequivalent metal centers. The coordination spheres of metal centers in the complexes have been determined from isomer shift and quadrupole splitting data.
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