Interionic interactions of glycine, l-alanine, glycylglycine and phenylalanine in aqueous 1-hexyl-3-methylimidazolium chloride ionic liquid solutions at T= (288.15 to 308.15) K: Volumetric, speed of sound and viscometric measurements

Acoustical properties of molecular interactions in 1-propanol, 1-butanol and 1-pentanol with tetrahydrofuran in cyclohexanone at various temperatures

“…The excess values of internal pressure, adiabatic compressibility and Gibbs free energy indicate that the strength of the interaction between molecules with changing temperatures do not vary much and mole fraction in the case of THF+cyclohexanone+1-propanol mixture, while change clearly is able to detect in THF+cycloxanone+1-butanol and 1pentanol mixture [19]. This is due to the fact that THF+cycloxanone+1-propanol there may be a large dipole in comparison to THF+cycloxanone+1butanol mixture.…”

“…5. Unlike molecules, weak interactions provide positive higher values, while the dipole-dipole, dipole-induced dipole, charge transfer and hydrogen bonding are unlike the molecules of negative ones [19]. From the magnitude of velocity, there is molecular interactions in the combination of THF and cyclohexanone mixture, which are linked to the keto group of oxygen atoms, resulting in a weak link between them.…”

“…Depending on the strength of the interaction between different molecules identified and due to the high level of sign and size of irregularity of excess of parameters. Table 3 shows that the Gibbs's free energy values may be worthy of significant interactions such as hydrogen bonding, which can lead to negative irregularities [9,10]. Table 3.…”

Vapor Pressure Osmometry, Volumetry, and Compressibility Properties for Solutions of Several Imidazolium Based Ionic Liquids in (Glycine + Water) Solutions

“…The investigated ILs are 1-butyl-3-methyl-imidazolium trifluoromethanesulfonate, [C 4 mim]­[CF 3 SO 3 ], 1-butyl-3-methylimidazolium chloride, [C 4 mim]­Cl, and 1-hexyl-3-methylimidazolium chloride, [C 6 mim]­Cl. However, relatively little data has been found in the literature regarding the thermodynamics properties of aqueous IL + amino acids solutions. ,,− …”

Solvation behavior of glycine and diglycine in aqueous 1-butyl-3-methylimidazolium chloride ionic liquid solutions at different temperatures

“…Molecular structure and intermolecular forces play an important role in determining the thermodynamic properties of liquids which in turn depend upon the manner in which components are associated with each other. Various reports are available in literature [4][5][6][7][8][9] on the density and speed of sound for the binary mixtures of ILs with some organic solvents, however the studies on the thermodynamic and thermo physical behavior of binary mixtures of amino acids in aqueous ionic liquids are very limited [10][11][12][13][14]. The thermodynamic data of binary mixtures of ILs with amino acids are required to understand the molecular interactions existing in mixtures.…”