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Hyperfine Interactions

, Volume 90, Issue 1, pp 435–439 | Cite as

Oxidation of SnF2 stannous fluoride in aqueous solutions

  • Georges Denes
  • George Lazanas
Chemical Structure and Bonding

Abstract

The rate of oxidation of SnF2 in aqueous solutions has been studied by redox titrations and Mössbauer spectroscopy on frozen solutions versus the acidity of the solutions and versus time. Tin(II) oxidizes in aqueous solutions; however, the rate of oxidation is much slower than previously reported. Redox titrations show that the amount of tetravalent tin increases continuously with time. Oxygen dissolved in water seems to be the oxidizing species. The oxidation rate is faster in acidic solutions. Mössbauer spectroscopy on frozen solutions shows the slow formation of tetravalent tin; it also indicates that divalent tin in aqueous solutions is similar to that observed in solid SnF2, except that one water molecule coordinates tin.

Keywords

Oxidation Oxygen Spectroscopy Thin Film Aqueous Solution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • Georges Denes
    • 1
  • George Lazanas
    • 1
  1. 1.Laboratory of Solid State Chemistry and Mössbauer Spectroscopy, Materials Research Group (MRGGRM), Department of Chemistry and BiochemistryConcordia UniversityMontréalCanada

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