A C-13 NMR spectral examination of alpha- and beta-carbon signal peak heights in some disubstituted arylporphyrins

Authors
Shaw, SJ Shanmugathasan, S Clarke, OJ Boyle, RW Osborne, AG Edwards, C
Citation
Sj. Shaw et al., A C-13 NMR spectral examination of alpha- and beta-carbon signal peak heights in some disubstituted arylporphyrins, J PORPHYR P, 5(7), 2001, pp. 575-581
Citations number
28
Categorie Soggetti
Chemistry
Journal title
JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
ISSN journal
10884246 → ACNP
Volume
5
Issue
7
Year of publication
2001
Pages
575 - 581
Database
ISI
SICI code
1088-4246(200107)5:7<575:ACNSEO>2.0.ZU;2-0
Abstract
A C-13 NMR spectral study of 29 arylporphyrin derivatives is presented. In all of the tetrasubstituted and trisubstituted compounds examined the alpha - and beta -carbons exhibited the expected broadened signals. In complete c ontrast, the diphenylporphyrins all showed sharp alpha- and beta -carbon pe aks which facilitated structural confirmation. These observations have been correlated with differing tautomeric exchange rates. Copyright (C) 2001 Jo hn Wiley & Sons, Ltd.