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Electron spin resonance study of some polycyclic nitrogen heterocyclic radical anions

✍ Scribed by Arjen J. L. Sevenster; Brian J. Tabner

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
468 KB
Volume
22
Category
Article
ISSN
0749-1581

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✦ Synopsis

In dimethylformamide the ESR spectra of the radical anions of dibenzoCf,h]quinoxaline and dibenzo[a,c]phenazine both exhibit line broadening due to slow molecular tumbling over a wide temperature range. Similar effects are also observed in the spectra of the radical anions of quinoxaline and phenazine. The ESR spectra of the radical anions of dibenzolf,h]quinoxaline and dibenzo[a,c]phenazine have been interpreted by computer reconstruction and the hyperhe splitting constants assigned with the aid of Hiickel unpaired electron density calculations.

* Author to whom correspondence should be addressed. lyte. Solutions of the radical anions were prepared for ESR study as described in Ref. 17.

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