EPR MEASUREMENTS ON THE DIFFUSIONLESS HOMOGENEOUS ELECTRON-SELF EXCHANGE KINETICS OF THE NITROBENZENE-NITROBENZENE RADICAL-ANION COUPLE IN NITROBENZENE AS SOLVENT

Authors
GRAMPP G KHAN YA LARSEN H
Citation
G. Grampp et al., EPR MEASUREMENTS ON THE DIFFUSIONLESS HOMOGENEOUS ELECTRON-SELF EXCHANGE KINETICS OF THE NITROBENZENE-NITROBENZENE RADICAL-ANION COUPLE IN NITROBENZENE AS SOLVENT, Perkin transactions. 2, (12), 1997, pp. 2555-2557
Citations number
22
Journal title
Perkin transactions. 2 → ACNP
ISSN journal
03009580
Issue
12
Year of publication
1997
Pages
2555 - 2557
Database
ISI
SICI code
0300-9580(1997):12<2555:EMOTDH>2.0.ZU;2-H
Abstract
Electron-self exchange rate constants of the nitrobenzene-nitrobenzene radical anion couple (NB/NB.-) and their temperature dependence have been measured by EPR-linebroadening effects in the so-called 'fast exc hange limit'. Nitrobenzene itself serves as solvent. The first order r ate constants of these diffusionless reactions vary between 2.8 x 10(8 ) and 9.7 x 10(8) s(-1) within a temperature range of 296-353 K. The r esults are compared on the basis of Marcus theory of electron transfer reactions with corresponding results of the same redox couple in solv ents like DMF and CH3CN.