Foerster, Hans G. and Roberts, John D. (1980) Natural-Abundance ^(15)N Nuclear Magnetic Resonance Spectroscopy of Coronands, Cryptands, and Some of Their Complexes with Diamagnetic Metal Ions. Journal of the American Chemical Society, 102 (23). pp. 6984-6988. ISSN 0002-7863. doi:10.1021/ja00543a013. https://resolver.caltech.edu/CaltechAUTHORS:20151006-132045811
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Abstract
Natural-abundance I5N nuclear magnetic resonance spectra of nitrogen-containing crown ethers, cryptand ligands, and other ligands with pyridine-type nitrogens and their complexes with alkali, alkaline-earth, silver(I), and thallium(I) ions are reported. The complexation shifts tend to go downfield with increasing charge and increasing ionic character of the nitrogen-to-metal-ion bond but upfield with increasing polarizability of the ion. The downfield shifts are generally more pronounced if the ions fit tightly into the cyclic ligand. For those metal ions expected to form essentially covalent bonds to nitrogen, the complexation shifts are not easily predicted. Some of the thallium- and silver-cryptate complexes display sizable one-bond ^(15)N-metal couplings.
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| Alternate Title: | Natural-abundance nitrogen-15 nuclear magnetic resonance spectroscopy of coronands, cryptands, and some of their complexes with diamagnetic metal ions | |||||||||
| Additional Information: | © 1980 American Chemical Society. Received March 18, 1980. Supported by the National Science Foundation and by the Public Health Service, Grant No. GM-11072 from the Division of General Medical Sciences. NATO Postdoctoral Fellow, 1976-1977. We thank Professor Dr. F. Vogtle and coworkers for samples of ligands and also Professor S. I. Chan for helpful discussions. | |||||||||
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| Issue or Number: | 23 | |||||||||
| DOI: | 10.1021/ja00543a013 | |||||||||
| Record Number: | CaltechAUTHORS:20151006-132045811 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20151006-132045811 | |||||||||
| Official Citation: | Natural-abundance nitrogen-15 nuclear magnetic resonance spectroscopy of coronands, cryptands, and some of their complexes with diamagnetic metal ions Hans G. Foerster and John D. Roberts Journal of the American Chemical Society 1980 102 (23), 6984-6988 DOI: 10.1021/ja00543a013 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 60811 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 06 Oct 2015 21:33 | |||||||||
| Last Modified: | 10 Nov 2021 22:39 |
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