Buchner, Richard and Barthel, Josef and Gill, Bernard (1999) La[Fe(CN)(6)] ion pairing in aqueous solution. A dielectric relaxation study. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1 (1). pp. 105-109. ISSN 1463-9076,
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Complex permittivity spectra of aqueous La[Fe(CN)(6)] solutions at 25 degrees C over the frequency range 0.2 less than or equal to v/GHz less than or equal to 89 are presented. Because of the large association constant of lanthanum ferricyanide, K-A = 5300, and its high ion-pair dipole moment, mu(IP) = 77.7 D, dilute solutions in the range 0.0026 less than or equal to c/mol dm(-3) less than or equal to 0.0485 could be investigated. It is shown that the current models for the analysis of the ion-pair dispersion amplitude are reliable. The data reveal that the formation of contact ion-pairs is at a nearly diffusion controlled rate, and suggest that the ion-pair activity coefficient deviates from ideality. The effective solvation number of the electrolyte is determined from the solvent permittivity.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTROLYTE-SOLUTIONS; MOLECULAR-DYNAMICS; CHLORIDE SOLUTIONS; SPECTROSCOPY; PERMITTIVITY; HYDRATION; LIQUIDS; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > PD Dr. Richard Buchner |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Dec 2022 09:21 |
| Last Modified: | 05 Dec 2022 09:21 |
| URI: | https://pred.uni-regensburg.de/id/eprint/48726 |
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