Warren, John P. and Roberts, John D. (1974) Nitrogen-15 Nuclear Magnetic Resonance Spectroscopy. Nitrogen-15 Chemical Shifts Determined from Natural-Abundance Spectra. Journal of Physical Chemistry, 78 (24). pp. 2507-2511. ISSN 0022-3654. doi:10.1021/j100617a017. https://resolver.caltech.edu/CaltechAUTHORS:20151008-153200168
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Abstract
A number of ^(15)N chemical shifts, determined at the natural-abundance level of the isotope, are reported for some secondary alkylamines, amides, ureas, urethanes, heterocycles, and miscellaneous compounds. Substituent chemical-shift parameters have been derived for secondary-alkylamine ^(15)N chemical shifts. The ^(15)N chemical shifts of secondary alkylamines appear to be potentially useful to determine the number of carbon atoms β to the nitrogen. Effects produced by differences in stereochemistry on the ^(15)N nmr spectra of di-2-butylamine and di-2-hexylamine have been detected. Possible procedures for accounting for changes in diamagnetic shielding between pairs of compounds are discussed.
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| Additional Information: | © 1974 American Chemical Society. Received May 23, 1974. We are grateful to Dr. R.L. Lichter for a number of useful discussions, and to Dr. B.L. Hawkins who made the modifications to the spectrometer for Fourier-transform operation. Supported by the Public Health Service, Research Grant No. GM- 11072 from the Division of General Medical Sciences, and by the National Science Foundation. Contribution No. 4892. | |||||||||
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| Issue or Number: | 24 | |||||||||
| DOI: | 10.1021/j100617a017 | |||||||||
| Record Number: | CaltechAUTHORS:20151008-153200168 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20151008-153200168 | |||||||||
| Official Citation: | Nitrogen-15 nuclear magnetic resonance spectroscopy. Nitrogen-15 chemical shifts determined from natural-abundance spectra John P. Warren and John D. Roberts The Journal of Physical Chemistry 1974 78 (24), 2507-2511 DOI: 10.1021/j100617a017 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 60927 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 10 Oct 2015 02:40 | |||||||||
| Last Modified: | 10 Nov 2021 22:41 |
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