Mössbauer study of the dynamic behaviour of gold in molecular crystals

Abstract

Measurements are reported of the temperature dependence of the Mössbauer fraction of a number of Au^I and Au^III complexes. A simple model is described with which this temperature dependence of the Mössbauer fraction was analysed in terms of intra- and Inter-molecular vibrations. The observed difference between Mössbauer fractions of Au^I and Au^III complexes has to be attributed mainly to the larger mass of the latter, rather than to the difference in co-ordination number.