Physicochemical and spectroscopic studies of molecular interactions of 1-butyl-3-methylimidazolium hexafluorophosphate + 2-methoxyethanol or 2-ethoxyethanol binary mixtures at temperatures from 298.15 to 323.15 K

Excess molar volumes, VmE as function of mole fraction, x1 of [Bmim][PF6] and IR spectra for [Bmim][PF6] + 2-methoxyethanol mixtures.182