Riddell, Frank G., Cameron, Kenneth S., Holmes, Susan A., Strange, John H. (1997) Five-membered ring rotations, pseudorotations, and hydrogen bond exchange dynamics in the solid state studied by NMR spectroscopy. Journal of the American Chemical Society, 119 (32). pp. 7555-7560. ISSN 0002-7863. (doi:10.1021/ja970851f) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:17909)
| The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. | |
| Official URL: http://dx.doi.org/10.1021/ja970851f |
Abstract
C-13 CP/MAS NMR studies were carried out on trans-1,2-cyclopentanediol, on 4,4-dimethyl-trans-1,2-cyclopentanediol, and on sulfolane at variable temperatures. The spectra showed evidence of three dynamic solid-state processes: hydrogen bond exchange, ring pseudorotation, and whole molecule rotations about local C-2 axes. Fitting of T-1 rho data to calculated values of the C-13-H-1 dipolar interactions allowed differentiation between ring pseudorotations and whole molecule C-2 reorientations. Isotopic H-1/H-2 substitution demonstrated the existence of hydrogen bond exchange processes in the diols. Activation parameters for these processes were derived from both coalescence measurements and the T-1 rho measurements.
| Item Type: | Article |
|---|---|
| DOI/Identification number: | 10.1021/ja970851f |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
| Depositing User: | T.J. Sango |
| Date Deposited: | 18 May 2009 11:50 UTC |
| Last Modified: | 05 Nov 2024 09:53 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/17909 (The current URI for this page, for reference purposes) |
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