Studies in Mössbauer spectroscopy. Part 9. Gold-197 spectra of gold(I) compounds

Abstract

Gold-197 Mössbauer parameters are reported for gold(I) compounds of the type [AuClL] and [AuL₂]⁺(L = tertiary phosphine or arsine), which conform to the previously noted correlations of quadrupole splitting with isomer shift. The parameters clearly distinguish two-co-ordinate [AuClL] from [AuL₂]⁺ and from three-co-ordinate [AuClL₂]. Scales of partial isomer shifts and quadrupole splittings are derived, but are of limited use.