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NMR spectra of porphyrins. Part 31. Ring currents in hydroporphyrins

✍ Scribed by Abraham, Raymond J.; Medforth, Craig J.; Smith, Kevin M.; Goff, Dane A.; Simpson, Daniel J.


Book ID
125902568
Publisher
American Chemical Society
Year
1987
Tongue
English
Weight
778 KB
Volume
109
Category
Article
ISSN
0002-7863

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πŸ“œ SIMILAR VOLUMES


The NMR spectra of porphyrins: 22β€”Ring c
✍ Kevin M. Smith; Dane A. Goff; Raymond J. Abraham; James E. Plant πŸ“‚ Article πŸ“… 1983 πŸ› John Wiley and Sons 🌐 English βš– 624 KB

## Abstract The proton NMR spectra of tetraphenylporphyrin, octaethylporphyrin and the analogous chlorins (7,8‐dihydroporphyrins) are presented, and the chemical shift changes on chlorin formation are interpreted using a ring current model. In these compounds a general 10% reduction in the ring cur

The NMR spectra of the porphyrins. 36β€”Ri
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The change in ring current of octaethylporphyrin, meso-tetraphenylporphyrin and phthalocyanine cobalt(II1) complexes with axial amine ligands was studied using a double dipole network model. The porphyrin ring current was found to be highest in octaethylporphyrin but decreased by 5% in meso-tetraphe

NMR spectra of the porphyrins. Part 39.
✍ Raymond J. Abraham; Ian Marsden; Lucy Xiujing πŸ“‚ Article πŸ“… 1990 πŸ› John Wiley and Sons 🌐 English βš– 666 KB

## Abstract A model of the paramagnetism in cobalt(II) porphyrin complexes has been developed which successfully calculates paramagnetic shifts for protons not affected by the contact term. The model utilizes a single large dipole positioned on the cobalt(II) atom, and calculates the pseudo‐contact