Refractive indices of binary mixtures of (1,2-dichloroethane + 2-chloroethanol) at various temperatures

Density and refractive index in mixtures of ionic liquids and organic solvents: Correlations and predictions

“…This latter definition of n id has frequently been used and provided good, consistent results [27,31,35]. This is not the case with other definitions of n id such as that based on an analogy with the molar volume, n id = xn 1 +(1 À x)n 2 , which is also frequently used but has no physical ground and usually gives meaningless results [28][29][30].…”

“…Such approaches often lead to useless results that are inconsistent with the values for other thermodynamic variables such as volume or enthalpy. Nevertheless, one can use very simple, reasonable assumptions in order to establish meaningful definitions of these ''ideal" quantities and obtain results not only consistent with thermodynamic data, but also useful with a view to interpreting microscopic phenomena related to the mixing process [31].…”

Refractive properties of binary mixtures containing 2-methoxyethanol and diethylamine, triethylamine, and propylamine

“…The experimental data of the refractive index (n D ) obtained from the measurements of the pure solvents and for the analyzed binary mixtures at all investigated temperatures are summarized in Tables II-IV. Many authors have been recommended for the refractometric analysis of intermolecular interactions in liquid binary mixtures to study deviations from additivity of the coefficient n D plotted as a function of the concentration expressed as a mole fraction [12][13][14]. However, this method has a certain theoretical foundation only for liquid [24,25] system composed from nonpolar or weakly polar and not associated components.…”

Volumetric Properties of Cyclic Alanylalanine in Aqueous Solutions of MnCl2, NiCl2 and ZnCl2 at Temperatures T = (293.15 to 313.15) K

“…In order to examine the intermolecular forces existing in pure solvents and solutions, dependence of R D on composition and temperature can be taken into account. This is mainly because molar refraction depends on the composition of the solution and temperature [37]. Thus variation of R D° suggests that the overall polarizability of cyclic alanylalanine in presence of metal salts increases with its concentration.…”