Abstract :
This paper reports the results of 119Sn Mِssbauer Spectroscopy of residues from the pyrolysis of Sn3O3Bu6 (1) and Sn4O6Bu4 (2) (Bu=n-butyl) in air, O2, and N2. The isomer shift and quadrupole splitting parameters of the samples allowed the identification of the tin oxidation states, as well as the number of non-equivalent coordinated tin sites. The result of the 119Sn Mِssbauer study correlates perfectly with those of X-ray electron probe microanalysis, scanning electron microscopy and X-ray powder diffraction for the formation of pure SnO2 from the decomposition of (1) and (2) in air or O2. However, in N2, evidences suggest the formation of a mixture of SnO2 and SnO.
