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The excess molar volumes (V E ) and viscosity deviations (∆η) have been calculated from experimental density (F) and viscosity (η) data of the binary mixtures of 1,3-dioxolane (DO) with 2-methoxyethanol (ME), 2-ethoxyethanol (EE), 2-butoxyethanol (BE), 2-propylamine (PA), and cyclohexylamine (CA) measured over the entire range of composition at 298.15 K. Moreover, deviations in isentropic compressibility (∆K S ) and molar refraction (∆R) have been calculated from ultrasonic speed of sounds (u) and refractive indices (n D ) of the mixtures, respectively. The excess or deviation properties were fitted to the Redlich-Kister polynomial equation to derive the adjustable parameters (A k ) and corresponding standard deviations (σ).

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Assembly of pyridine-2-aldoxime drug with cucurbit [6]uril (CB[6]) has been investigated by1H-NMR and 2D-ROESY NMR, UV-Vis spectroscopy, FT-IR spectroscopy, surface tension and conductivity measurements in aqueous saline environment. The distinct cationic receptor feature and the cavity dimension of the CB[6] emphasize that the macro-cyclic host molecule remain as complex with the nerve stimulus drug molecule. The results obtained from surface tension and specific conductivity measurements suggest 1:1 inclusion complex formation between drug and CB[6]. The stability constant evaluated by UV-Vis spectroscopic approach is 2.21×105M−1at 298.15 K, which indicates that the complex is sufficiently stable at physiological temperature.

Electrolytic conductivities, densities, viscosities, and refractive indices of some lithium halides (LiCl, LiBr, and LiI) have been studied in mass fraction (0.10, 0.20, and 0.30) of ethylene glycol monomethyl ether + methyl alcohol mixtures at 303.15 K. The limiting molar conductivities (Λ 0 ), association constants (K A ), and the distance of closest approach of the ion (R) have been evaluated using the Fuoss conductance equation (1978). The Walden product is obtained and discussed. The limiting apparent molar volumes (φ V °), experimental slopes (S V * ) derived from the Masson equation, and viscosity A and B coefficients using the Jones-Dole equation have been interpreted in terms of ion-ion and ion-solvent interactions, respectively.