Cation radicals of phenothiazines. Part 2. Electron transfer between aquacobalt(III) and N-alkylphenothiazines
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 10,p. 1516-1518
- https://doi.org/10.1039/dt9790001516
Abstract
The kinetics of electron transfer between aquacobalt(III) and some N-alkylphenothiazines has been investigated by means of the stopped-flow technique. The reaction consists of a one-electron transfer with formation of the corresponding cation radicals. The reaction rates have been found to be independent of acidity in the range 0.40 ⩽[HClO4]⩽ 2.00 mol dm–3, suggesting that Co3+(aq) is the main reacting species. The results are discussed in terms of the Marcus cross-reaction equation for outer-sphere electron-transfer reactions.Keywords
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