ELECTROOXIDATION OF PORPHYRIN FREE BASES - FATE OF THE PI-CATION RADICAL

Authors
INISAN C SAILLARD JY GUILARD R TABARD A LEMEST Y
Citation
C. Inisan et al., ELECTROOXIDATION OF PORPHYRIN FREE BASES - FATE OF THE PI-CATION RADICAL, New journal of chemistry, 22(8), 1998, pp. 823-830
Citations number
46
Categorie Soggetti
Chemistry
Journal title
New journal of chemistry → ACNP
ISSN journal
11440546
Volume
22
Issue
8
Year of publication
1998
Pages
823 - 830
Database
ISI
SICI code
1144-0546(1998)22:8<823:EOPFB->2.0.ZU;2-N
Abstract
In contrast to metalloporphyrins with non-electroactive metal centres, the pi-cation radicals of porphyrin free bases (H2OEP, H2TPP, H(2)Cdi E) electrogenerated in strictly anhydrous solvents are not stable and give rise to a quantitative chemical reaction. Conjunction of electroc hemical and spectroscopic data (UV/VIS, EPR and NMR) demonstrates unam biguously that the porphyrin skeleton is not modified during the chemi cal reaction. The reaction product is the protonated free base, and th us the free base can be regenerated by reduction of the protons.