| Autor: |
Cyvin, Sven J., Cyvin, Bjørg N., Brunvoll, Jon, Chen, Rong-Si |
| Zdroj: |
Monatshefte für Chemie / Chemical Monthly; October 1989, Vol. 120 Issue: 10 p833-847, 15p |
| Abstrakt: |
Classes of coronoids (or degenerate coronoids), r and q are obtained by providing the rectangle-shaped benzenoids Rj (m, 3) with a naphthalenic or pyrenic hole, respectively. The numbers of Kekulé structures (K) are studied. It was found for theK numbers of the classes in question:r=4/5R andq=1/5R. The classes r' and q' are similar to r and q, respectively, but the naphthalenic or pyrenic hole is oriented in a different way. For these classes it was found:r'=3/5R,q'=2/5R. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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