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Oxidation of SnF2 stannous fluoride in aqueous solutions

  • Chemical Structure and Bonding
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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.

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Authors and Affiliations

  1. Laboratory of Solid State Chemistry and Mössbauer Spectroscopy, Materials Research Group (MRGGRM), Department of Chemistry and Biochemistry, Concordia University, H3G 1M8, Montréal, Québec, Canada

    Georges Denes & George Lazanas

Authors
  1. Georges Denes
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  2. George Lazanas
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Denes, G., Lazanas, G. Oxidation of SnF2 stannous fluoride in aqueous solutions. Hyperfine Interact 90, 435–439 (1994). https://doi.org/10.1007/BF02069152

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  • DOI: https://doi.org/10.1007/BF02069152

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