Raman studies of molten salt hydrates: the beryllium and aluminium nitrate-water systems |
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| Authors: | DJ Gardiner RE Hester E Mayer |
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| Institution: | Department of Chemistry, University of York, Heslington, YorkEngland;Institut für Anorganische und Analytische Chemie, Universität Innsbruck, InnsbruckAustria |
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| Abstract: | Raman spectra of the liquid systems Be(NO3)2 · 20H2O, Be(NO3)2 · 4H2O, Al(NO3)3·20H2O, and Al(NO3)3 · 9H2O have been recorded. The spectra are analysed in terms of vibrational modes arising from water, the nitrate ion, the aquated metal ions and hydrolysis products. For the concentrated beryllium system, though not for the aluminium system, the spectra suggest a significant degree of proton transfer from Be(OH2)4]2+ to NO3?. Solvent-separated metal-nitrate ion pairs appear to be present in all the systems studied. |
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