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Nuclear Magnetic Resonance Spectroscopy. Nitrogen-15 and Carbon-13 Spectra of Complexes of Ethylenediaminetetraacetic Acid (EDTA) with Closed-Shell Metal Ions

Hagen, R. and Warren, J. P. and Hunter, D. H. and Roberts, John D. (1973) Nuclear Magnetic Resonance Spectroscopy. Nitrogen-15 and Carbon-13 Spectra of Complexes of Ethylenediaminetetraacetic Acid (EDTA) with Closed-Shell Metal Ions. Journal of the American Chemical Society, 95 (17). pp. 5712-5716. ISSN 0002-7863. doi:10.1021/ja00798a044. https://resolver.caltech.edu/CaltechAUTHORS:20151008-153202502

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Abstract

The ^(15)N and ^(13)C chemical shift changes have been determined for ethylenediaminetetraacetic acid (EDTA) as the result of changes in pH and complex formation with closed-shell metal ions. The carboxyl-carbon lac shifts in parts per million resulting from complex formation with metal ions are generally smaller than the concomitant shifts of the ^(15)N resonances which themselves are not large. The comparatively small ^(15)N chemical shift changes of EDTA upon metal complex formation are probably due to near-cancellation of variations in local paramagnetic and diamagnetic shielding terms. This may be a general phenomenon for ligands lacking a large local paramagnetic contribution to the shielding of the nitrogen donor atoms.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ja00798a044DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ja00798a044PublisherArticle
Additional Information:© 1973 American Chemical Society. Received December 5, 1972. Supported by Public Health Service Grant 11070-04 from the Division of General Medical Sciences and the National Science Foundation.
Funders:
Funding AgencyGrant Number
U.S. Public Health Service (USPHS)GM-11070-04
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Caltech Gates and Crellin Laboratories of Chemistry4595
Issue or Number:17
DOI:10.1021/ja00798a044
Record Number:CaltechAUTHORS:20151008-153202502
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151008-153202502
Official Citation:Nuclear magnetic resonance spectroscopy. Nitrogen-15 and carbon-13 spectra of complexes of ethylenediaminetetraacetic acid (EDTA) with closed-shell metal ions R. Hagen, J. P. Warren, D. H. Hunter, and John D. Roberts Journal of the American Chemical Society 1973 95 (17), 5712-5716 DOI: 10.1021/ja00798a044
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60935
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:10 Oct 2015 01:47
Last Modified:10 Nov 2021 22:41

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