Solvation Approach* to Ion Solvent Interaction

Abstract

From the hard-sphere model proposed, i.e., that the ion and its solvation layer are incompressible, and from density and compressibility data, the variation of solvation number with concentration, the intrinsic volume of ions, and the mean distance of approach are obtained. These properties of the ions, and the molar refractions, the dipole moment of the ion pair, and the viscosity, are correlated via the solvated molar volume φ8.

Apparent molar volumes and compressibilities of lanthanum, gadolinium and lutetium trifluoromethanesulfonates in dimethylsulfoxide

“…the volume of 1 mol of unsolvated ions, and DU V;el is the maximum decrease of the solvent volume caused by electrostriction per mole of solvent [32]. The latter is independent of the type of ion that creates the electrical field.…”

Density and sound speed study of hydration of 1-butyl-3-methylimidazolium based amino acid ionic liquids in aqueous solutions

“…The increase in V 1 with concentration of studied AAIL exhibits a water structure making effect similar to that of tetra-n-alkylammonium salts and neutral solutes like alcohols and ethers in water [60,61] indicating the importance of hydrophobic nature of amino acid anions of AAIL in aqueous solutions even in presence of strong hydrophilic functional groups like -NH 2 and -COO À . The volume change due to electrostriction can be estimated using the expression [62,63] V 0…”

Elements and Elemental Compounds in Waters and the Aquatic Food Chain

“…Ultrasonic velocity measurements are convenient for measuring hydration numbers from ion compressibilities (Padova 1964 The crystals of the first series of the transition metals are colored; for example, Ti(III), V(II), V(III), Mn(II), Fe(II), Fe(III), Co(II), Ni(II). The hexaaquo-salts of these metals dissolve in water without changing the color.…”