Benzenoid hydrocarbons having eigenvalues of ±√2
- 1 January 1991
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions
- Vol. 87 (22) , 3631-3640
- https://doi.org/10.1039/ft9918703631
Abstract
The structural origin of eigenvalues ±√2 is discussed. Particular attention is given to the questions of how to recognise their occurrence without evaluating the complete eigenspectrum, and on how to construct and count such benzenoid species. The method is generally applicable and is illustrated with a detailed study of catacon-densed and some other fused and polymeric benzenoids. A collection of subspectral structures together with some homologous series are tabulated.Keywords
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