On the behaviour of molecular interactions of ionic liquids with organic solvent from <i>T</i> = (298.15 to 323.15) K at 0.1 MPa

Density, speed of sound and viscosity values are measured for different binary mixture concentrations of ([Bmim][NTf2] + aniline) and ([Bmim][Pf6] + aniline) systems at temperatures from T = (298.15 to 323.15) K. VTF equation is used to fit the experimental viscosity values. The excess values of – molar volume, isentropic compressibility, molar Gibbs free energy of activation and speed of sound have been calculated. R-K equation is utilised to evaluate coefficients and standard deviations. The assumptions on the behaviour of molecular interactions from the analysis of excess parameters are supported by the spectroscopic studies.