Mössbauer spectra and structures of organotin compounds. The relationship between quadrupole splitting and intermolecular association

Abstract

The Mössbauer spectra of cyclohexyltin derivatives and of the compounds Ph₂Sn(X)·[CH₂]₄·Sn(X)Ph₂(X = I, OH, O·CO·Me, or Ph), Bu_nSn(O·CO·Me)_4–n(n= 2 or 3), and Bu₂Sn maleate have been recorded. These data are used to define the range of quadrupole splittings associated with tetrahedral organotin compounds. It is shown that the simple point-charge model does not account for the quadrupole splittings of compounds with differing co-ordination numbers. Quadrupole splitting data are used empirically to discuss intermolecular association in organotin compounds.