Abstract

A model for the interpretation of the 119 m Sn Mössbauer data for some tin(II) compounds in terms of the distribution of the tin valence electrons is suggested. It accounts for the positive signs of the quadrupole coupling constants ( eQV zz) observed for tin(II) compounds and for the variations in the Mössbauer parameters of triligandstannates(II) as the cation is changed. Although there is no general relationship between the chemical isomer shift and the quadrupole splitting parameters for tin(II) materials, the model does explain why approximately linear relationships are found between these parameters for particular series of triligandstannates(II).

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