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Nuclear Magnetic Resonance Spectroscopy. Conformations and Conformational Equilibration of Bis(trifluoromethyl)tetrachloroethane

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.

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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
Additional Information:© 1968 American Chemical Society. Received April 8, 1968. Supported by the National Science Foundation. National Science Foundation Predoctoral Fellow, 1965-1968.
Funding AgencyGrant Number
NSF Predoctoral FellowshipUNSPECIFIED
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Other Numbering System NameOther Numbering System ID
Caltech Gates and Crellin Laboratories of Chemistry3667
Issue or Number:13
Record Number:CaltechAUTHORS:20151014-144939249
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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
Deposited By: Ruth Sustaita
Deposited On:15 Oct 2015 20:28
Last Modified:03 Oct 2019 09:04

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