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Nitrogen-15 Nuclear Magnetic Resonance Studies of Porphyrins

Gust, Devens and Roberts, John D. (1977) Nitrogen-15 Nuclear Magnetic Resonance Studies of Porphyrins. Journal of the American Chemical Society, 99 (11). pp. 3637-3640. ISSN 0002-7863. doi:10.1021/ja00453a021.

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The ^(15)N NMR spectra of meso-tetraphenylporphyrin, its dication, and zinc tetraphenylporphyrin have been investigated both at the natural-abundance level and with isotopic enrichment. The resonances of tetraphenylporphyrin at ambient temperatures are broadened by chemical exchange of the central hydrogen atoms. At lower temperatures, the ^(15)N spectra provide structural information concerning the bonding of these hydrogens. The variable-temperature ^(15)N spectra of mixtures of tetraphenylporphyrin and its dication also reveal chemical-exchange phenomena. Spectra for tetraphenylporphyrin dication and zinc tetraphenylporphyrin at the natural-abundance level are reported. Spin-lattice relaxation times and nuclear Overhauser effect data have been determined for ^(15)N enriched samples of these two compounds.

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Additional Information:© 1977 American Chemical Society. Received August 25, 1976. Supported by the National Science Foundation: the Public Health Service, Research Grant No. GM-11072, from the Division of General Medical Sciences: and the University Grants Committee, Arizona State University.
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U.S. Public Health Service (USPHS)GM-11072
Arizona State UniversityUNSPECIFIED
Issue or Number:11
Record Number:CaltechAUTHORS:20151008-115811454
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Official Citation:Nitrogen-15 nuclear magnetic resonance studies of porphyrins Devens Gust and John D. Roberts Journal of the American Chemical Society 1977 99 (11), 3637-3640 DOI: 10.1021/ja00453a021
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60912
Deposited By: Ruth Sustaita
Deposited On:11 Oct 2015 11:08
Last Modified:10 Nov 2021 22:41

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