TY - JOUR
T1 - Preferential solvation of ions in mixed solvents. Part 2. - The solvent composition near the ion
AU - Marcus, Yizhak
PY - 1988
Y1 - 1988
N2 - The quasi-lattice quasi-chemical theory of preferential solvation that was related previously to the Gibbs free energy of transfer of an ion from a reference solvent to a mixture of solvents has now been extended to yield the actual amount of the preferential solvation of the ion. This is defined as δx1 = x1L-x1, the excess (or deficiency) of the local mole fraction of the solvent S1 in the vicinity of the ion X over its mole fraction in the bulk, in a very dilute solution of X, in the mixture of solvents S1 and S2. The preferential solvation obtained for six cases as illustrations (sodium, silver and chloride ions in aqueous dimethyl sulphoxide and acetonitrile) is related to the equilibrium constants for solvent exchange.
AB - The quasi-lattice quasi-chemical theory of preferential solvation that was related previously to the Gibbs free energy of transfer of an ion from a reference solvent to a mixture of solvents has now been extended to yield the actual amount of the preferential solvation of the ion. This is defined as δx1 = x1L-x1, the excess (or deficiency) of the local mole fraction of the solvent S1 in the vicinity of the ion X over its mole fraction in the bulk, in a very dilute solution of X, in the mixture of solvents S1 and S2. The preferential solvation obtained for six cases as illustrations (sodium, silver and chloride ions in aqueous dimethyl sulphoxide and acetonitrile) is related to the equilibrium constants for solvent exchange.
UR - http://www.scopus.com/inward/record.url?scp=0000498327&partnerID=8YFLogxK
U2 - 10.1039/F19888401465
DO - 10.1039/F19888401465
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0000498327
SN - 0300-9599
VL - 84
SP - 1465
EP - 1473
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
IS - 5
ER -