Solute-solvent interactions in imidazolium camphorsulfonate ionic liquids
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概要
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We directly observe the interaction between 1-butyl-3-methylimidazolium (bmim) or 1-butyl-2,3-dimethylimidazolium (bm2im) and the solute, ethyl acrylate (EA), which is the popular dienophile in the Diels–Alder reaction and an H-bonding acceptor, by using specially designed electrospray mass spectrometry. In imidazolium ionic liquids, cation–anion interactions are controlled byselecting the appropriate anion, and the naked C2–H of imidazolium, which loosely interacts with its counterion, can readily interact with an H-bonding acceptable solute. The ion–counterion (solvent–solvent) interaction affects the ion–solute (solvent–solute) interaction. This relation is oneof the key criteria for selecting the cation–anion combination in tailoring ILs.
- 2007-11-28
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