“…Especially fluid phase properties of IL containing mixtures, such as activity coefficients and solubilities are important for the design of separations processes, the choice of a reaction medium and many other applications. The models that have been applied to the prediction of these properties range from molecular dynamics (MD) using atomistic force fields [5,6], over quantitative structure-property relationship (QSPR) models [7,8] thermodynamic models, such as NRTL, UNIQUAC, or UNIFAC [9][10][11]. Molecular dynamics simulations need appropriate force fields that have to be specially developed for thermodynamic property prediction of ILs.…”