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Carbon-13 and Nitrogen-15 Spin-Lattice Relaxation in Cyanide Ion and Hydrogen Cyanide

Loftus, Philip and Bearden, William H. and Roberts, John D. (1977) Carbon-13 and Nitrogen-15 Spin-Lattice Relaxation in Cyanide Ion and Hydrogen Cyanide. Nouveau journal de chimie, 1 (4). pp. 283-285. ISSN 0398-9836. http://resolver.caltech.edu/CaltechAUTHORS:20151103-141023817

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Abstract

Carbon-13 and nitrogen-15 spin-lattice relaxation for cyanide ion in aqueous solution appears to be a complex process with contributions from spin rotation, scalar relaxation, and chemical-shift anisotropy, as well as an appreciable concentration dependence, although the nature of the counterion seems unimportant. Carbon relaxation in cyanide ion is insensitive to pH from pH 8 to 12. Measurements at different temperatures and field strengths indicate that for ^(13)C, chemical-shift anisotropy and spin anisotropy and spin rotation are the dominant modes of relaxation. The contribution of ^(14)N quadrupole-induced carbon relaxation bas been determined by comparing ordinary cyanide with nitrogen-15 labeled cyanide. The degree of dipolar relaxation has been found to be small for hydrogen cyanide nitrogen-15 relaxation also appears to have an important contribution from the chemical-shift anisotropy of cyanide ions.


Item Type:Article
Additional Information:© 1977 Centre national de la recherche scientifique. Received December 20. 1976. We would like to thank Dr. R. O. Duthaler for data on the ^(15)N relaxation time of quinuclidine. Supported by tbe Public Health Service, Research Grant No. GM-11072, from the Division of General Medical Sciences, and by the National Science Foundation.
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Funding AgencyGrant Number
U.S. Public Health Service (USPHS)GM-11072
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Record Number:CaltechAUTHORS:20151103-141023817
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20151103-141023817
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61802
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:04 Nov 2015 19:39
Last Modified:04 Nov 2015 19:39

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