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Significant Cation Effects in Carbon Dioxide–Ionic Liquid Systems
Author(s) -
Hollóczki Oldamur,
Kelemen Zsolt,
Könczöl László,
Szieberth Dénes,
Nyulászi László,
Stark Annegret,
Kirchner Barbara
Publication year - 2013
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.201200970
Subject(s) - ionic liquid , solvation , chemistry , solubility , intermolecular force , solvent , carbon dioxide , dispersion (optics) , ion , ionic bonding , solvent effects , inorganic chemistry , chemical physics , computational chemistry , organic chemistry , molecule , catalysis , physics , optics
Carbon dioxide–ionic liquid systems are of great current interest, and significant efforts have been made lately to understand the intermolecular interactions in these systems. In general, all the experimental and theoretical studies have concluded so far that the main solute–solvent interaction takes effect through the anion, and the cation has no, or only a secondary role in solvation. In this theoretical approach it is shown that this view is unfounded, and evidence is provided that, similarly to the benzene–CO 2 system, dispersion interactions are present between the solute and the cation. Therefore, this defines a novel site for tailoring solvents to tune CO 2 solubility.