Zusammenhang zwischen freien standard-transferenthalpien von ionen und empirischen lösungsmittelparametern

Standard free energies of transfer from the reference solvent acetonitrile to various protic and aprotic solvents have been calculated based on the assumption of negligible diffusion potentials in certain galvanic cells. The standard free energies of transfer of Cl^–, Br^–, and I^– are linearly related to the acceptor numbers of unstructured solvents. Similarly, linear relationships were found to exist between the donor numbers of unstructured solvents and the standard free energies of transfer of K⁺ and in part Ag⁺. Deviations from linearity occuring in protic solvents like water, methanol, ethanol or trifluoroethanol are interpreted in terms of changes in solvent structure.

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Zusammenhang zwischen freien standard-transferenthalpien von ionen und empirischen lösungsmittelparametern

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Mit 5 Abbildungen