A Caltech Library Service

Nitrogen-15 Magnetic Resonance Spectroscopy. II. Coupling Constants

Binsch, Gerhard and Lambert, Joseph B. and Robertson, Bryan W. and Roberts, John D. (1964) Nitrogen-15 Magnetic Resonance Spectroscopy. II. Coupling Constants. Journal of the American Chemical Society, 86 (24). pp. 5564-5570. ISSN 0002-7863. doi:10.1021/ja01078a033.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Coupling constants have been measured between nitrogen-15 and directly bonded hydrogen or carbon-13, and between nitrogen-15 and hydrogen separated by two or more bonds. The data may generally be interpreted in terms of the Fermi contact coupling mechanism except for those cases where the electron distribution around the nitrogen atom is highly anisotropic. Empirical relationships have been developed which relate the observed J^(15)NH and J^(15)N^(13)C to the hybridization of the orbitals involved. These relationships fail for J^(16)NH in diphenylketimine and for J^(15)N^(13)C in benzalmethylamine and acetonitrile, probably because of contributions to the nuclear spin-spin coupling from electron orbital motion. The data are consistent with the interpretation that nitrogen in ammonia forms nearly sp^3 bonds to hydrogen, rather than p bonds as suggested by Pauling.

Item Type:Article
Related URLs:
URLURL TypeDescription
Additional Information:© 1964 American Chemical Society. Received August 25, 1964. Supported in part by the Public Health Service Research Grant 11072-01 from the Division of General Medical Sciences, the Office of Naval Research, and the National Science Foundation. National Science Foundation Graduate Fellow, 1962-1965; National Academy of Sciences-National Research Council Postdoctoral Fellow, 1963-1964.
Funding AgencyGrant Number
U.S. Public Health Service (USPHS)11072-01
Office of Naval Research (ONR)UNSPECIFIED
NSF Graduate FellowshipUNSPECIFIED
National Academy of Sciences-National Research Council Postdoctoral FellowshipUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Gates and Crellin Laboratories of Chemistry3099
Issue or Number:24
Record Number:CaltechAUTHORS:20151016-110315378
Persistent URL:
Official Citation:Nitrogen-15 Magnetic Resonance Spectroscopy. II. Coupling Constants Gerhard. Binsch, Joseph B. Lambert, Bryan W. Roberts, and John D. Roberts Journal of the American Chemical Society 1964 86 (24), 5564-5570 DOI: 10.1021/ja01078a033
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61200
Deposited By: Ruth Sustaita
Deposited On:16 Oct 2015 18:57
Last Modified:10 Nov 2021 22:45

Repository Staff Only: item control page