LFER correlations for the solubilising characterisation of room temperature ionic liquids containing trifluoromethanesulfonate and trifluoroacetate anions

Gas-to-RTIL (room temperature ionic liquid) partition coefficients have been compiled from the published literature for solutes dissolved in 1-methyl-3-butylimidazolium trifluoromethylsulfonate, {[MBIm]+[Trif]-}, and in 1-methyl-3-ethylimidazolium trifluoroacetate, {[MEIm]+[F3Ac]-}. These partition coefficients were converted into water-to-RTIL partition coefficients using the corresponding gas-to-water partition coefficients. Both sets of partition coefficients were analysed using the Abraham model and Goss modified Abraham models with cation-specific and anion-specific equation coefficients. Equation coefficients are reported for the trifluoromethylsulfonate and trifluoroacetate anions. The calculated anion coefficients can be combined with our previously determined eight sets of cation-specific equation coefficients to yield expressions capable of predicting the partition coefficients of solutes in 16 different RTILs.