Solvent effects on ion-pair equilibria

Trans–cis isomerization of [(C6H5)3P]2PtCl2 complex in dimethylformamide solutions

“…The observed different behavior can be explained in terms of solvation differences in water and non-aqueous media [28][29][30][31]. The solvation effects resulting from the different polarity of water and DMF molecules are also responsible for the different activation energies observed in both media considered.…”

Extraction of MAu(CN)2Ion Pairs into Organic Solvents from Aqueous Solution

“…The temperature was kept at a constant 25.00 Ϯ 0.01°C. A calibration curve was obtained using literature values for the dielectric constant of several pure organic solvents (14,15).…”

“…In this series of experiments, five solvents were selected with a variety of functional groups, dielectric constants (14,15), water solubilities (16) and other properties: tri-n-butyl phosphate (TBP), 1-pentanol (P), methyl isobutyl ketone (MIBK), ethyl acetate (EA), and nitrobenzene (NB). These solvents were contacted with increasing concentrations of aurocyanide, and the background electrolyte (0.1 M MCl) was systematically varied (M ϭ H, Li, K, Cs, NEt 4 ).…”

Basicity comparison for di-substituted 4-nitropyridine derivatives in polar non-aqueous media

“…To estimate the influence of non-aqueous media, in particular of their polarity and (acid + base) properties, on the mentioned equilibria (1) and (2), the experiments were carried out in four types of solvents with different polarity. The numerical values of the dielectric permittivities (e) [19,20], donicity numbers (DN) [19] and acceptor numbers (AN) [19] of all the considered equilibria solvents in this study are collected in table 1.…”