Hyperfine Shifts of the 13C‐NMR. in low spin iron(III) porphyrin complexes
- 31 January 1973
- journal article
- research article
- Published by Wiley in Helvetica Chimica Acta
- Vol. 56 (2) , 585-596
- https://doi.org/10.1002/hlca.19730560204
Abstract
The 13C‐NMR. in Zn(II)(Porphin), Fe(III)(Porphin)(CN2), Zn(II)(Tetraphenyl‐porphin), and Fe(III)(Tetraphenylporphin)(CN2) have been identified, and the 13C hyperfine shifts in the iron complexes evaluated. It was found that dipole‐dipole coupling with the electron spin localized in the π‐orbitals of the aromatic carbon atoms makes an important contribution, to the 13C hyperfine shifts. In a preliminary analysis the experimental spin density distribution obtained from the combined 1H‐ and 13C‐NMR.‐data is compared with theoretical models of the iron porphyrin complexes.Keywords
This publication has 16 references indexed in Scilit:
- The electronic g-tensor in cytochrome b5: High resolution proton magnetic resonance studiesBiochimica et Biophysica Acta (BBA) - Protein Structure, 1972
- Carbon-13 Fourier transform nuclear magnetic resonance study of some porphyrins. Evidence for a preferred delocalization pathwayJournal of the American Chemical Society, 1972
- Electronic structure of cyanide complexes of hemes and heme proteinsJournal of Molecular Biology, 1971
- Nuclear magnetic resonance spectroscopy. Observation of carbon-13 resonances in a paramagnetic transition metal complex. Nickel(II) N,N'-di(p-tolyl)aminotroponiminateJournal of the American Chemical Society, 1970
- Isotropic NMR shifts in transition metal complexes: The calculation of the fermi contact and pseudocontact termsJournal of Magnetic Resonance (1969), 1970
- PROTON MAGNETIC RESONANCE STUDIES OF PORPHYRIN IRON (III) CYANIDESProceedings of the National Academy of Sciences, 1969
- High-resolution proton magnetic resonance spectra of sperm whale cyanometmyoglobin.Proceedings of the National Academy of Sciences, 1968
- The theory of carbon-13 splittings in electron spin resonance spectraPublished by Walter de Gruyter GmbH ,1962
- Comments on ``Proton Relaxation Times in Paramagnetic Solutions''The Journal of Chemical Physics, 1957
- ber die magnetischen Momente der AtomkerneThe European Physical Journal A, 1930