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Solvated solvents: Water molecules interact with the imidazolium cation and [BF4]− ion (see picture) of the molten ionic-liquid salt 1-n-butyl-3-methylimidazolium tetrafluoroborate. Evidence for short CH⋅⋅⋅O and CH⋅⋅⋅F interactions is provided by 1H{1H} and 1H{19F} NMR spectroscopy nuclear Overhauser enhancements.
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Mele et al. (2003) studied this question.
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