Tin-119 Mössbauer spectra of trichlorotin complexes

Abstract

The range of available ¹¹⁹Sn Mössbauer data for the trichlorotin system has been extended. Variations of the Mössbauer parameters are rationalised by considering the effect of the donor ability of the ligand L in the complex LSnCl₃. This approach is shown to be consistent with available i.r. and crystallographic data. The data strongly suggest that the Mössbauer centre shift does not provide a good distinction between formal Sn^II and Sn^IV species in many cases and that a valence-bond (hybridisation) approach is more meaningful.