Gibbs Energy of the Transfer of Cryptand[2.2.2] from Water to a Water–Ethanol Solvent

Abstract

Gibbs energies of the transfer of cryptand[2.2.2] from water to a water–ethanol solvent of variable composition are determined from the interphase distribution of the substance between immiscible phases at a temperature of 298 K composition. It is established that the solvation of cryptand[2.2.2] weakens upon an increase in the concentration of alcohol in the solution. Literature data are used to calculate Gibbs energies of the transfer of protonated cryptand[2.2.2] and complexes of it with nickel(II) and copper(II) ions from water to water–ethanol mixtures.