Solid-Liquid Equilibrium and Activity Coefficients for Caprolactam + 1-Hexyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide and Cyclohexanone Oxime + 1-Hexyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide Shevelyova, M.P.; Zaitsau, D.H.; Paulechka, Y.U.; Blokhin, A.V.; Kabo, G.J.; Verevkin, S.P.; Heintz, A.; Journal of Chemical & Engineering Data 2007, 52, 1360-1365