Effect of Solvent Composition on Ionic Mobilities of Some Tetraalkylammonium and Common Ions in Propylene Carbonate + Methanol Media at 25°C

Ionic Association and Conductances of Some Symmetrical Tetraalkylammonium Salts in Methanol, Acetonitrile, and Methanol (1) + Acetonitrile (2) Mixtures at 298.15 K

“…The limiting ionic conductivities have been evaluated from division of the Λ°values of Bu 4 NPh 4 B using the following relationship: as described earlier by us (Das and Hazra, 1998;Muhuri and Hazra, 1995) in conjunction with our recently reported Λ°values of Bu 4 NBr in the same solvent mixtures (Das and Saha, 2000). The values of the limiting ionic conductivity (λ°() in methanol, acetonitrile, and methanol (1) + acetonitrile (2) mixtures calculated using the above equation are given in Table 4.…”

“…Extensive studies on the electrical conductivities in various mixed organic solvents have been performed in recent years (Muhuri and Hazra, 1995;Srivastava and Samant, 1994;Doe et al, 1990;Taniewska-Osinska et al, 1989;Islam et al, 1989;Papadopopulos, 1989;Niazi, 1988) to examine the nature and magnitude of ion-ion and ionsolvent interactions. Such solvent properties as the viscosity and the relative permittivity have also been taken into consideration, which help determine the extent of ion association and the solute-solvent interactions.…”

Solvation Structures of Tetraethylammonium Bromide and Tetrafluoroborate in Aqueous Binary Solvents with Ethanol, Trifluoroethanol, and Acetonitrile

“…Uniquely, electrospray mass spectrometry has provided the information about the preferential solvation of TMA + and tetrabutylammonium (TBA + ) by acetonitrile (AN) molecules in AN–water binary solvents from the mass numbers of TBA + –solvent clusters . Methanol (MeOH) binary solvents with AN, DMSO, and PC have also been employed as binary solvents for investigations of TAA + salts. − However, most of the investigations on TAA + salts in binary solvents have been made on the macroscopic scales, such as the mobilities of ions. Thus, the solvation structure of TAA + and the interactions between TAA + and counteranions in water–organic solvents on the atomic scales are still not well known.…”

Electrical Conductances of Some Symmetrical Tetraalkylammonium Salts in Methanol, Acetonitrile, and Methanol (1) + Acetonitrile (2) Mixtures at 298.15 K

“…Extensive studies on electrical conductivities in various mixed organic solvents have been performed in recent years (Muhuri and Hazra, 1995;Srivastava and Samant, 1994;Doe et al, 1990;Taniewska-Osinska et al, 1989;Islam et al, 1989;Papadopopulos, 1989;Niazi, 1988) to examine the nature and magnitude of ion-ion and ion-solvent interactions. Such solvent properties as the viscosity and the relative permittivity have also been taken into consideration, which help determine the extent of ion association and the solute-solvent interactions.…”