119Sn Mössbauer spectroscopic study of nanometric tin dioxide powders prepared by pyrolysis of organotin oxides

✍ Scribed by A.G. Pereira; A.O. Porto; G.M. de Lima; H.G.L. Siebald; J.D. Ardisson

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 432 KB
• Volume: 127
• Category: Article
• ISSN: 0038-1098
• DOI: 10.1016/s0038-1098(03)00375-2

✦ Synopsis

This paper reports the results of 119 Sn Mo ¨ssbauer Spectroscopy of residues from the pyrolysis of Sn 3 O 3 Bu 6 (1) and Sn 4 O 6 Bu 4 (2) (Bu ¼ n-butyl) in air, O 2 , and N 2 . 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 119 Sn Mo ¨ssbauer study correlates perfectly with those of X-ray electron probe microanalysis, scanning electron microscopy and X-ray powder diffraction for the formation of pure SnO 2 from the decomposition of (1) and (2) in air or O 2 . However, in N 2 , evidences suggest the formation of a mixture of SnO 2 and SnO.