Specific ion effects in non-aqueous solvents: The case of glycerol carbonate

Filippo Sarri, Duccio Tatini, Damiano Tanini, Matteo Simonelli, Moira Ambrosi, Barry W. Ninham, Antonella Capperucci, Luigi Dei, Pierandrea Lo Nostro*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    13 Citations (Scopus)

    Abstract

    The effect of eight potassium salts (KF, K3PO4, KOCN, K2CO3, KCl, K2SO4, KBr and KI) on glycerol carbonate (GC) is studied through NMR, DSC, solubility and ATR-FTIR experiments. From the solubility data, the main thermodynamic functions of solution and solvation are estimated, and the mean molal activity coefficients are calculated. The results suggest that the capability of an anion to establish hydrogen bonds with the solvent molecules (or behave as a base, as in the case of fluoride, phosphate, cyanate and carbonate) is the most important structural feature that determines its effects on the solvent structure. On the other hand potassium iodide behaves in an anomalous way, due to the large polarizability of the anion that can form non-electrostatic, van der Waals dispersive intermolecular interactions.

    Original languageEnglish
    Pages (from-to)711-717
    Number of pages7
    JournalJournal of Molecular Liquids
    Volume266
    DOIs
    Publication statusPublished - 15 Sept 2018

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