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Binary Mixtures of Ionic Liquids: A Joint Approach to Investigate their Properties and Catalytic Ability

Authors

  • Dr. Francesca D'Anna,

    Corresponding author
    1. Dipartimento STEMBIO, Sezione di Chimica Organica “E. Paternò”, Università degli Studi di Palermo, Viale delle Scienze, Parco d'Orleans II, Ed. 17, 90128 Palermo (Italy)
    • Dipartimento STEMBIO, Sezione di Chimica Organica “E. Paternò”, Università degli Studi di Palermo, Viale delle Scienze, Parco d'Orleans II, Ed. 17, 90128 Palermo (Italy)
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  • Dr. Salvatore Marullo,

    1. Dipartimento STEMBIO, Sezione di Chimica Organica “E. Paternò”, Università degli Studi di Palermo, Viale delle Scienze, Parco d'Orleans II, Ed. 17, 90128 Palermo (Italy)
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  • Paola Vitale,

    1. Dipartimento STEMBIO, Sezione di Chimica Organica “E. Paternò”, Università degli Studi di Palermo, Viale delle Scienze, Parco d'Orleans II, Ed. 17, 90128 Palermo (Italy)
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  • Prof. Renato Noto

    Corresponding author
    1. Dipartimento STEMBIO, Sezione di Chimica Organica “E. Paternò”, Università degli Studi di Palermo, Viale delle Scienze, Parco d'Orleans II, Ed. 17, 90128 Palermo (Italy)
    • Dipartimento STEMBIO, Sezione di Chimica Organica “E. Paternò”, Università degli Studi di Palermo, Viale delle Scienze, Parco d'Orleans II, Ed. 17, 90128 Palermo (Italy)
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Abstract

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 1H and 19F 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.

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