Abstract
The quantification of solvent effects is an important tool to understand physicochemical phenomena in solution. According to Gutmanns' “donor–acceptor concept”, the donor number is a measure for the tendency to donate electron pairs to acceptors, and the acceptor number a measure for the electrophilic properties of a solvent. To achieve a better understanding of the complex solvent–solute relationship in ionic liquids, donor and acceptor numbers for a series of 36 imidazolium-based ionic liquids have been determined by using 23Na and 31P NMR spectroscopy. For more details see the Full Paper by R. van Eldik et al. on page 10969 ff.
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