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Carbon-13 and Nitrogen-15 Spin-Lattice Relaxation (T_1) and Nuclear Overhauser Enhancement (NOE) Measurements for Acetamide and N,N- Dimethylacetamide

Giannini, Donald D. and Armitage, Ian M. and Pearson, Harry and Grant, David M. and Roberts, John D. (1975) Carbon-13 and Nitrogen-15 Spin-Lattice Relaxation (T_1) and Nuclear Overhauser Enhancement (NOE) Measurements for Acetamide and N,N- Dimethylacetamide. Journal of the American Chemical Society, 97 (12). pp. 3416-3419. ISSN 0002-7863. http://resolver.caltech.edu/CaltechAUTHORS:20151008-153159341

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Abstract

Nitrogen-15 spin-lattice relaxation times (T_1's) and nuclear Overhauser enhancement (NOE) values are found to vary over a range of concentrations for acetamide. Our data indicate that intermolecular amide-amide hydrogen bonds are broken on dilution in water. Carbon-13 spin-lattice relaxation times and nuclear Overhauser enhancement measurements are given for acetamide and N,N-dimethylacetamide at 5.3 M. There is good agreement between experimental and calculated relaxation rates assuming rapid rotation of the α methyl group and slow rotation about the amide bond.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ja00845a023DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ja00845a023PublisherArticle
Additional Information:© 1975 American Chemical Society. Received July 6, 1974. Supported by the Public Health Service, Research Grant No. GM-11072, from the Division of General Medical Sciences, and by the National Science Foundation; Harkness Fellow of the Commonwealth Fund, New York, 1972-1974; Sherman Fairchild Distinguished Scholar at the California Institute of Technology (on sabbatical leave from the Department of Chemistry, University of Utah, 1973-1974).
Funders:
Funding AgencyGrant Number
U.S. Public Health Service (USPHS)GM-11072
NSFUNSPECIFIED
New York Commonwealth FundUNSPECIFIED
Sherman Fairchild FoundationUNSPECIFIED
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Caltech Gates and Crellin Laboratories of Chemistry4916
Record Number:CaltechAUTHORS:20151008-153159341
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20151008-153159341
Official Citation:Carbon-13 and nitrogen-15 spin-lattice relaxation (T1) and nuclear Overhauser enhancement (NOE) measurements for acetamide and N,N-dimethylacetamide Donald D. Giannini, Ian M. Armitage, Harry Pearson, David M. Grant, and John D. Roberts Journal of the American Chemical Society 1975 97 (12), 3416-3419 DOI: 10.1021/ja00845a023
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60924
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:10 Oct 2015 12:12
Last Modified:10 Oct 2015 12:12

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