Solvent and temperature effects on ion association and mobility of 2,6-lutidinium chloride in non-aqueous solvents

Osmotic coefficients of binary mixtures of 1-butyl-3-methylimidazolium methylsulfate and 1,3-dimethylimidazolium methylsulfate with alcohols at T=323.15K

“…The second term on the right hand side of equation (3) is the correction for non-ideality of the solvent vapour through the virial equation. The necessary data on the second virial coefficients, B s , molar volumes, V Ã s , densities, d s , relative permittivities, e, and Antoine constants, A, B, and C, for the different solvents were taken from literature and they are presented in table 1 (References [17][18][19][20][21][22][23]). This table also contains the calculated values of the Debye-Hückel constants, A / .…”

Vapour pressures and osmotic coefficients of binary mixtures of 1-ethyl-3-methylimidazolium ethylsulfate and 1-ethyl-3-methylpyridinium ethylsulfate with alcohols at T=323.15K

“…The second term on the right-hand side of equation (3) is the correction for non-ideality of the solvent vapour through the virial equation. The necessary data on the second virial coefficients, B s, molar volumes, V Ã s , densities, d s , relative permittivities, e, and Antoine constants, A, B, and C, for the different solvents were taken from literature and they are presented in table 1 [19][20][21][22][23][24][25], together with the calculated values of the Debye-Hückel constants, A u . The uncertainty for the experimental osmotic coefficients and for the calculated activity coefficients were <±0.006 and <±0.02, respectively.…”

Temperature Dependence of Ion Transport: The Compensated Arrhenius Equation

“…This conclusion is confirmed by vibrational spectroscopic measurements of the internal modes of the anion that are especially sensitive to cation−anion interactions. − Therefore, when TbaTf is used as the solute, all species that exist in solution are “free” ions, and consequently, the temperature- or concentration-dependent conductivity can be interpreted in terms of changes in ionic mobility and not ionic association. Both the temperature and concentration dependence of conductivities in liquid and polymeric organic electrolytes have been interpreted in terms of the formation of ionically associated species such as ion pairs and more highly associated ionic aggregates. , However, it has been pointed out that the association constants obtained from these analyses do not necessarily correspond to formation of contact ion pairs or complexes; rather, these constants should be viewed as a way of representing the effects of Coulombic forces at short interionic distances. , …”