Quenching of excited-state xanthone and thioxanthone by inorganic anions
- 1 January 1985
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 2
- No. 8,p. 1279-1283
- https://doi.org/10.1039/p29850001279
Abstract
The quenching rates of both singlet and triplet states of thioxanthone by a group of inorganic anions have been determined, enabling a comparison of their reactivities. The quenching rates of triplet xanthone were also measured. All determinations were made in MeCN–H2O (3 : 2 v/v). The various rates are correlated with the free-energy change for electron-transfer, ΔG23°, according to the treatments of Rehm and Weller and of Polanyi; an unexpectedly good fit is given by the latter.Keywords
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