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We report results of molecular dynamics simulations characterizing thesolvation and interaction of small apolar particles such as methane and Xenonin imidazolium-based ionic liquids (ILs). The simulations are able to reproducesemi-quantitatively the anomalous temperature dependence of the solubility ofapolar particles in the infinite dilution regime. We observe that the``solvophobic solvation'' of small apolar particles in ILs is governed bycompensating entropic and enthalpic contributions, very much like thehydrophobic hydration of small apolar particles in liquid water. In addition,our simulations clearly indicate that the solvent mediated interaction ofapolar particles dissolved in ILs is similarly driven by compensatingenthalpic/entropic contributions, making the ``solvophobic interaction''thermodynamically analogous to the hydrophobic interaction.

The Solvophobic Solvation and Interaction of Small Apolar Particles in  Imidazolium-Based Ionic Liquids is Characterized by  Enthalpy-/Entropy-Compensation