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Nuclear Magnetic Resonance Spectroscopy. Conformational Equilibriums and Equilibration of 3,3-Difluoro-Trans-cyclodecene

Noe, Eric A. and Wheland, Robert C. and Glazer, Edward S. and Roberts, John D. (1972) Nuclear Magnetic Resonance Spectroscopy. Conformational Equilibriums and Equilibration of 3,3-Difluoro-Trans-cyclodecene. Journal of the American Chemical Society, 94 (10). pp. 3488-3491. ISSN 0002-7863. doi:10.1021/ja00765a040.

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On cooling 3,3-difluoro-trans-cyclodecene from room temperature to - 152º, three different processes which equilibrate cyclodecene conformations appear to become slow on the nmr time scale. At -152º, at least five out of eight possible conformational classes are present, four of which are separated by 0.8 kcal/mol or less. The free energy of activation for the slowest of the equilibration processes compares well with that for trans-cyclodecene itself.

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Additional Information:© 1972 American Chemical Society. Received May 17, 1971. Supported by the National Science Foundation. National Science Foundation Summer Fellow, 1966 and 1968; National Defense Education Act Trainee, 1968-1969; (b) National Science Foundation Postdoctoral Fellow, 1970-1971.
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National Defense Education Act TraineeUNSPECIFIED
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Caltech Gates and Crellin Laboratories of Chemistry4253
Issue or Number:10
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Official Citation:Nuclear magnetic resonance spectroscopy. Conformational equilibriums and equilibration of 3,3-difluoro-trans-cyclodecene Eric A. Noe, Robert C. Wheland, Edward S. Glazer, and John D. Roberts Journal of the American Chemical Society 1972 94 (10), 3488-3491 DOI: 10.1021/ja00765a040
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60957
Deposited By: Ruth Sustaita
Deposited On:15 Oct 2015 22:17
Last Modified:10 Nov 2021 22:42

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