UNIGE document Scientific Article
previous document  unige:3064  next document
add to browser collection
Title

Temperature Effect on Back Electron-Transfer Reactions within a Geminate Radical Pair: the Influence of the Solvent on the Adiabaticity of the Process

Authors
Suppan, Paul
Published in Chemical Physics. 1989, vol. 139, no. 2-3, p. 381-390
Abstract A study of the temperature dependence (from 233 to 353 K) of the rate of back electron-transfer reactions within geminate radical pairs by measurement of the free radical yield is reported. The radical pair is generated by photoinduced electron transfer with rhodamine 6G and oxazine 118 cations as electron acceptors and aromatic amines and methoxy-benzene derivatives as electron donors in acetonitrile, methanol and ethanol. In acetonitrile, the back electron transfer is non-adiabatic and apparent negative activation energies are observed for barrierless reactions. In alcohol solvents, an anomalously large temperature dependence is observed, which is attributed to a solvent-controlled adiabatic behaviour.
Identifiers
Full text
This document has no fulltext available yet, but you can contact its author by using the form below.
Structures
Research group Groupe Vauthey
Citation
(ISO format)
VAUTHEY, Eric, SUPPAN, Paul. Temperature Effect on Back Electron-Transfer Reactions within a Geminate Radical Pair: the Influence of the Solvent on the Adiabaticity of the Process. In: Chemical Physics, 1989, vol. 139, n° 2-3, p. 381-390. doi: 10.1016/0301-0104(89)80150-8 https://archive-ouverte.unige.ch/unige:3064

395 hits

0 download

Update

Deposited on : 2009-09-21

Export document
Format :
Citation style :