Study to explore assorted interfaces of an ionic liquid prevailing in solvent systems by physicochemical approach

Abstract

Electrolytic conductivities, densities, viscosities, refractive index and FT-IR studies of 1butyl-pyridinium bromide ([bupy]Br) have been studied in 1,4 Dioxane, Tetrahydrofuran, and Acetonitrile at different temperatures. The molar conductivities observed were explained with the manifestation of the formation of ion-pairs and triple ion formation. The limiting ionic conductances have been estimated from the appropriate division of limiting molar conductance of tetrabutylammonium tetraphenylborate as "reference electrolyte" method along with a numerical evaluation of ion-pair and triple-ion formation constants (KP ≈ KA and KT). Ion-solvent interactions have been interpreted in terms of apparent molar volumes, viscosity B-coefficients and molar refraction which are obtained from the results supplemented with densities, viscosities and refractive index respectively. The FT-IR spectra of the solvents as well as solutions have also been studied. The results have been discussed in terms of ion-dipole interactions, structural aspect and configurational theory.

Study to Explore Diverse Interactions by Physicochemical Contrivance of an Ionic Liquid in Aqueous Oligosaccharides

“…From Table 8 it is evident that ∆B values are positive and increases with a rise in temperature and with increasing concentration of carbohydrate, thereby suggesting the presence of strong solute-solvent interactions, and the interactions are strengthened with rise in temperature and increase of carbohydrate in aqueous mixture [39]. The observation supports the same results obtained from The sign of dB/dT is another tool of structure-forming or -breaking ability of the solute [32].…”

Thermodynamic Studies of Molecular Interactions in Mixtures Containing Tetrahydropyran, 1,4-Dioxane, and Cyclic Ketones

“…The postulation of molecular entities XI–XIV then suggests that there must be a change in (C–O); (C–H) vibrations of THP or D and (CO); (C–H) vibrations of CHO, CHPO on the addition of (1) to (2) in (1 + 2) mixtures. It was observed that THP, D, CHO, and CHPO in their pure state showed characteristic vibrations at 1091, 1083 cm –1 (C–O vibration in THP and D); 2753, 2754 cm –1 (C–H vibrations in THP and D); , 1714, 1694 cm –1 (CO vibrations in CHO and CHPO); 2938, 2948 cm –1 (C–H vibrations of CHO and CHPO) . However, characteristics vibrations for equimolar (1 + 2) mixtures were observed at 1121, 1112; 1123,1122 cm –1 (C–O vibration for THP or D in THP or D (1)+ CHO or CHPO (2) mixtures); 2755, 2757; 2749, 2752 cm –1 (C–H vibrations for THP or D in THP or D (1)+ CHO or CHPO (2) mixtures); 1712,1702; 1701, 1702 cm –1 (CO vibration or CHO or CHPO in THP or D (1) + CHO or CHPO (2) mixtures); and 2922, 2931; 2959, 2928 cm –1 (C–H vibration of CHO or CHPO in THP or D (1)+ CHO or CHPO (2) mixtures).…”

Diverse Interactions of N-Methyl Glycine in Aqueous Paracetamol Solution with the Manifestation of Solvation Consequences

“…Various spectroscopy may be employed to examine the diverse interaction playing in solution of any compound [42][43][44][45][46]. 1 Up field chemical shift of protons of methyl group and methylene group of glycine in aqueous solution of paracetamol from its pure form may be regarded due to the involvement of adjacent -NH-and -COOH groups in Hbonding with the -OH group of paracetamol.…”