Abstract
Infinite dilution activity coefficients and gas-to-liquid partition coefficients have been determined for at least 42 different organic solutes of varying polarity and hydrogen-bonding character dissolved in anhydrous ionic liquids comprising propyl(dimethyl)isopropylammonium bis(trifluoromethylsulfonyl)imide, hexyl(dimethyl)isopropylammonium bis(trifluoromethylsulfonyl)imide, 2-hydroxyethyl(dimethyl)isopropylammonium bis(trifluoromethylsulfonyl)imide, cyanomethyl(dimethyl)isopropylammonium bis(trifluoromethylsulfonyl)imide, and N,N,N′,N′-tetramethyl-N,N′-diisopropyl-1,9-nonanediaminium di[bis(trifluoromethylsulfonyl)imide]. The measured gas-to-liquid partition coefficient data were converted to water-to-liquid partition coefficients using standard thermodynamic relationships. Abraham model predictive correlations were developed from both sets of partition coefficients. The derived correlations describe the observed partitioning behavior to within 0.14 (or fewer) log units.
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