Abstract
The microscopic ionic volumes, v A, of complex inorganic anions, obtained from crystal unit cell volumes, as well as their standard molar volumes, \( V_{\text{A}}^{\infty } \), in aqueous solutions serve to establish whether these anions are water-structure-breakers or -makers. This is done via correlations with well known criteria for such effects, namely the ionic viscosity B-coefficients and the structural entropies. Complex anions with charges z A are structure-breakers if v A > 0.1|z A| nm3·ion−1 or \( V_{\text{A}}^{\infty } \) > 35|z A|4/3 cm3·mol−1 and structure-makers if otherwise.
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Presented at the 34th International Conference on Solution Chemistry in Prague, September 2015.
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Marcus, Y. The Effect of Complex Anions on the Structure of Water. J Solution Chem 44, 2258–2265 (2015). https://doi.org/10.1007/s10953-015-0402-5
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DOI: https://doi.org/10.1007/s10953-015-0402-5