Weigert, Frank J. and Roberts, John D. (1968) Nuclear Magnetic Resonance Spectroscopy. Conformations and Conformational Equilibration of Bis(trifluoromethyl)tetrachloroethane. Journal of the American Chemical Society, 90 (13). pp. 3577-3578. ISSN 0002-7863. https://resolver.caltech.edu/CaltechAUTHORS:20151014-144939249
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Abstract
The factors which influence conformational populations and barriers to rotation in halogenated ethanes do not yet seem well understood. While the favored form for 1,1,2,2-tetrachIoroethane (1a) has the hydrogens gauche, 1,2-difluorotetrachloroethane (1b) has a slight preference for fluorines trans and 1,2-dimethyltetrachloroethane (1c) has a strong preference for methyls trans. The effect of trifluoromethyl groups has now been determined by investigating the temperature variation of the ^(19)F nmr spectrum of bis(trifluoromethyl)-tetrachloroethane (1d) (obtained from the Pierce Chemical Co.) with the aid of a Varian A-56/60A spectrometer and a V-6040 variable-temperature accessory.
| Item Type: | Article | ||||||
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| Additional Information: | © 1968 American Chemical Society. Received April 8, 1968. Supported by the National Science Foundation. National Science Foundation Predoctoral Fellow, 1965-1968. | ||||||
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| Issue or Number: | 13 | ||||||
| Record Number: | CaltechAUTHORS:20151014-144939249 | ||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20151014-144939249 | ||||||
| Official Citation: | Nuclear magnetic resonance spectroscopy. Conformations and conformational equilibration of bis(trifluoromethyl)tetrachloroethane Frank J. Weigert and John D. Roberts Journal of the American Chemical Society 1968 90 (13), 3577-3578 DOI: 10.1021/ja01015a057 | ||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
| ID Code: | 61107 | ||||||
| Collection: | CaltechAUTHORS | ||||||
| Deposited By: | Ruth Sustaita | ||||||
| Deposited On: | 15 Oct 2015 20:28 | ||||||
| Last Modified: | 03 Oct 2019 09:04 |
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