The conformational inversion of 2,3:6,7-dibenzo-derivatives of cycloheptatriene, tropone, heptafulvene, oxepin, thiepin, and azepin
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society D: Chemical Communications
- No. 3,p. 158-160
- https://doi.org/10.1039/c29700000158
Abstract
Comparison of the energy barriers to conformational inversion of the seven-membered rings in compounds of the types (I) and (II) shows that the change in delocalisation energy associated with the planar seven-membered rings is apparently due to increased Ar–CC–Ar and Ar–X–Ar conjugation, and is not a special property of the cyclic conjugated system.Keywords
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