PMID: 5256994Mar 1, 1969Paper

Proton magnetic resonance studies of porphyrin iron (3) cyanides

Proceedings of the National Academy of Sciences of the United States of America
K WüthrichW S Caughey

Abstract

The nuclear magnetic resonance (NMR) spectra at 220 Mc of cyanodeuteroporphyrin IX dimethyl ester iron (III), cyanoprotoporphyrin IX diethyl ester iron (III), and cyanoprotoporphyrin IX iron (III) in a mixed solvent of 80 per cent d(5)-pyridine and 20 per cent D(2)O have been measured. The resonances are assigned and, except for the ester alkoxy groups, are shown to be shifted by temperature-dependent hyperfine interactions with Fe (III). From the experiments, upper limits are placed upon the pseudocontact contributions, and values of the contact interactions are derived. Spin densities in carbon pi-orbitals are calculated from the contact shifts and discussed in terms of preliminary Hückel calculations.

References

Dec 1, 1968·Proceedings of the National Academy of Sciences of the United States of America·K WüthrichT Yamane
Jun 1, 1968·Proceedings of the National Academy of Sciences of the United States of America·K WüthrichJ Peisach
Sep 1, 1962·Biochemistry·W S CAUGHEY, W S KOSKI

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Citations

May 15, 1977·Experientia·S G BlumenthalD E Bergstrom
Feb 14, 1972·Journal of Molecular Biology·K H Winterhalter, K Wüthrich
Apr 28, 1988·Biochimica Et Biophysica Acta·D H PeytonK Gersonde
Jul 1, 1969·Proceedings of the National Academy of Sciences of the United States of America·R G ShulmanM Brunori
Aug 1, 1969·Proceedings of the National Academy of Sciences of the United States of America·K Wüthrich
Jan 1, 1973·Annals of the New York Academy of Sciences·G W Kenner, K M Smith
Jan 1, 1973·Annals of the New York Academy of Sciences·W S CaugheyM C O'Toole
Jan 1, 1973·Annals of the New York Academy of Sciences·F A Walker, G N La Mar
Sep 21, 1971·Biochimica Et Biophysica Acta·J A WeightmanR J Williams
Mar 14, 1973·Helvetica Chimica Acta·K Wüthrich, R Baumann
Mar 18, 2005·Journal of the American Chemical Society·Donghan LeeLinda Thöny-Meyer

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