LANG, EW and BRADL, S and FINK, W and RADKOWITSCH, H and GIRLICH, D (1990) NUCLEAR-MAGNETIC-RESONANCE STUDIES OF SUPERCOOLED AQUEOUS-ELECTROLYTE SOLUTIONS. JOURNAL OF PHYSICS-CONDENSED MATTER, 2. SA195-SA200. ISSN 0953-8984, 1361-648X
Full text not available from this repository.Abstract
The dynamic properties of water molecules coordinated to simple ions (alkali and alkali-earth halides) and hydrophobic ions (tetraalkylammonium (TAA) halides) in supercooled solutions have been investigated with NMR. The study of spin-lattice relaxation rates and self-diffusion coefficients as functions of temperature, pressure, Larmor frequency and concentration reveals characteristic features of molecular motions close to the low-temperature limit of the metastable phase (percolation transition and glass transition) and provides certain details of the local arrangement of water molecules in the coordination sphere of these ions. The intramolecular flexibility of the alkyl chains of the hydrated TAA cations has been investigated also. The dynamics of the methyl group reorientation provide a sensitive probe of structural differences in these solutions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LATTICE RELAXATION-TIMES; WATER; PRESSURE; MODEL; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/55212 |
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