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Binary Mixtures of Ionic Liquids: A Joint Approach to Investigate their Properties and Catalytic Ability
Author(s) -
D'Anna Francesca,
Marullo Salvatore,
Vitale Paola,
Noto Renato
Publication year - 2012
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100878
Subject(s) - ionic liquid , tetrafluoroborate , imide , solvatochromism , chemistry , ionic bonding , solvent , ion , nuclear magnetic resonance spectroscopy , catalysis , inorganic chemistry , chemical physics , organic chemistry
The growing interest in the properties and applications of ionic liquids has recently led to research into the possibility of using their binary mixtures. This work reports on the effects of binary mixtures of ionic liquids on the outcome of organic reactions such as the mononuclear rearrangement of heterocycles and the solvatochromic behavior of Nile Red. Binary mixtures formed by ionic liquids differing in the structure of the cation and the anion are taken into account. In particular, ionic liquids such as 1‐benzyl‐3‐butylimidazolium bis(trifluoromethanesulfonyl)imide, 1‐(2,3,4,5,6‐pentafluorobenzyl)‐3‐butylimidazolium bis(trifluoromethanesulfonyl)imide, and 1‐benzyl‐3‐butylimidazolium tetrafluoroborate, are studied. To achieve a deep understanding of the properties of ionic‐liquid binary mixtures, their three‐dimensional organization was analyzed by a combination of resonance light scattering, UV/Vis spectroscopy, and 1 H and 19 F NMR spectroscopy. Data collected herein evidence that the most significant changes in the ionic lattice structure, and consequently the most pronounced effects exerted as solvent media, occur when the studied system involves a blend of different anions.