Activity coefficients at infinite dilution measurements for organic solutes in the ionic liquid 1-hexyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl)-imide using g.l.c. at TÂ =Â (298.15, 313.15, and 333.15) K

The partial molar excess enthalpies at infinite dilution values ΔH1E∞ were calculated from the experimental γ13∞ values obtained over the temperature range.