Lambert, Joseph B. and Binsch, Gerhard and Roberts, John D. (1964) Nitrogen-15 magnetic resonance spectroscopy, I. Chemical shifts. Proceedings of the National Academy of Sciences of the United States of America, 51 (5). pp. 735-737. ISSN 0027-8424 http://resolver.caltech.edu/CaltechAUTHORS:LAMpnas64
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Abstract
Except for the original determination(1) of nuclear moments, nitrogen magnetic resonance spectroscopy has been limited to the isotope of mass number 14. Although N14 is an abundant isotope, it possesses an electric quadrupole moment, which seriously broadens the resonances of nitrogen in all but the most symmetrical of environments.(2) Consequently, nitrogen n.m.r. spectroscopy has seen only limited use in the determination of organic structure. It might be expected that N15, which has a spin of ½ and no quadrupole moment, would be very useful, but the low natural abundance (0.36%) and the inherently low signal intensity (1.04 x 10^(-3) that of H1 at constant field) have thus far precluded utilization of N15 in n.m.r. spectroscopy.(3)
| Item Type: | Article |
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| Additional Information: | © 1964 by the National Academy of Sciences. Communicated March 23, 1964. Supported in part by U.S. Public Health Service research grant 11072-01 from the Division of General Medical Sciences, the Office of Naval Research, and the National Science Foundation. Contribution No. 3082 from the Gates and Crellin Laboratories of Chemistry, California Institute of Technology |
| Record Number: | CaltechAUTHORS:LAMpnas64 |
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:LAMpnas64 |
| Alternative URL: | http://dx.doi.org/10.1073/pnas.51.5.735 |
| Usage Policy: | You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format. |
| Metadata Review: | All Records > Caltech Library Services |
| ID Code: | 7243 |
| Collection: | CaltechAUTHORS |
| Deposited By: | Tony Diaz |
| Deposited On: | 23 Jan 2007 |
| Last Modified: | 04 Jul 2008 20:54 |
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