Moreno, Nicolas and Malagon, Andres and Buchner, Richard and Vargas, Edgar F. (2014) Apparent molal volumes of symmetrical and asymmetrical isomers of tetrabutylammonium bromide in water at several temperatures. JOURNAL OF CHEMICAL THERMODYNAMICS, 68. pp. 117-121. ISSN 0021-9614, 1096-3626
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Apparent molal volumes of a series of differently substituted quaternary ammonium bromides, namely tetra-iso-butyl-, tetra-sec-butyl-, tetra-n-butyl-, di-n-butyl-di-sec-butyl-and di-n-butyl-di-iso-butylammonium bromide have been determined as a function of molal concentration at (298.15, 303.15 and 308.15) K. Partial molar volumes at infinite dilution and ionic molar volumes of these quaternary ammonium cations were determined. Structural volume contributions to the ionic molar volume were also calculated. The symmetric and asymmetric quaternary ammonium cations are `` structure making'' ions. The contribution of the branched butyl chains predominates over the linear butyl chains in the asymmetric cations. (C) 2013 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AQUEOUS-SOLUTION; ORGANIC SOLUTES; IONIC VOLUMES; ELECTROLYTES; 100-DEGREES-C; 0-DEGREES-C; MIXTURES; SALTS; Apparent molal volumes; Asymmetrical cations; Partial molar volumes; Aqueous solutions; Quaternary ammonium cations |
| 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: | 04 Dec 2019 09:28 |
| Last Modified: | 04 Dec 2019 09:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/11150 |
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