ESR and ENDOR study on the radical ions of two non—alternant hydrocarbons: 1,3,5,7-tetra-tert-butyl-s-indacene and 2,7-di-tert-butyldicyclopenta [a,e] cyclooctene
✍ Scribed by Rainer Bachmann; Fabian Gerson; Georg Gescheidt; Klaus Hafner
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 531 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
Abstract
The radical anions and radical cations of two alkyl‐substituted non‐alternant hydrocarbons, 1,3,5,7‐tetra‐tert‐butyl‐s‐indacene and 2,7‐di‐tert‐butyldicyclopenta [a,e] cyclooctene, were characterized by their proton coupling constants with the use of ESR and, in part, ENDOR spectroscopy. Considering the unusual electronic structures of the π‐systems in question, these values agree fairly well with those predicted by simple MO theory. Also reported are the proton hyperfine data for the radical ions of the likewise alkyl‐substituted non‐alternant 8,16‐diisopropyl‐s‐indaceno [1,2,3‐cd:5,6,7‐c′ d′] diphenalene.