Voltammetric studies of the interaction of the lithium cation with reduced forms of the Dawson [S2Mo18O62]4- polyoxometalate anion

Alan M. Bond, Truc Vu, Anthony G. Wedd

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Multiple electron transfer steps observed in the reduction of [S2Mo18O62]4-, when LiClO4 is used as electrolyte, are accounted for by assuming that Li+ acts as a moderately strong Lewis acid. For example, in the 95:5 CH3CN + H2O solvent mixture (0.1 M NBu4ClO4), the voltammetric behavior obtained on addition of Li+ can be simulated according a reaction scheme involving an extensive series of reversible potentials and equilibrium constants. Precipitation of highly reduced polyoxometalate salts occurring at the electrode surface complicates the voltammetry at very negative potentials when 0.1 M LiClO4 is used as the electrolyte.

Original languageEnglish
Pages (from-to)96-104
Number of pages9
JournalJournal of Electroanalytical Chemistry
Issue number2
Publication statusPublished - 15 Dec 2000


  • Dawson polyoxometalate anion
  • Lithium cation
  • Voltammetry

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