Journal
CHEMPHYSCHEM
Volume 16, Issue 5, Pages 1026-1034Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201402825
Keywords
green chemistry; ionic liquids; liquids; noncovalent interactions; solvent effects
Funding
- CSIR, New Delhi
- Department of Science and Technology, New Delhi [SR/S2/JCB-26/2009]
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Understanding how a chemical reaction proceeds in solution requires precise knowledge of solute-solvent interactions. Certain issues involved in ionic liquid binary mixtures are still not clearly understood, including: 1) the effects of hydrogen-bond-acceptor basicity () of solvents on the synergistic effects found in ionic liquid-alcohol mixtures, 2) the interrelation between the polarity parameters in binary mixtures, and 3) the application of a model for the description of normalised electronic transition energy for all the binary mixtures. Here, a detailed analysis of polarity parameters in both hydrophilic and hydrophobic ionic liquids has been carried out. A three-parameter model developed by Roses et al. [J. Chem. Soc. Perkin Trans. 2 1997, 13411348] was found to be applicable to all the binary mixtures, and synergistic effects are generated as a result of high values of alcohols compared with those of the ionic liquids. A strong correlation was observed in the values and hydrophobicities of pure ionic liquids, suggesting that values can play a role in describing synergism.
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