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 | |||||||||
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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. | |||||||||
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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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