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    Université de Fribourg

    ¹⁸²Tungsten Mössbauer spectroscopy of heteropolytungstates

    Bochet, Christian G. ; Draper, Thérèse ; Bocquet, Bernard ; Pope, Michael T. ; Williams, Alan F.

    In: Dalton Transaction, 2009, vol. 26, p. 5127-5131

    The tungsten-182 Mössbauer spectra of a series of Keggin structure heteropolytungstates, [EW₁₂O₄₀]ⁿ⁻ are reported. There is a very considerable variation in quadrupole coupling at the tungsten nucleus indicating considerable asymmetry in the electron distribution for the more electronegative elements E. The quadrupole coupling correlates well with the structural data, in...