Number of Kekulé Structures as a Function of the Number of Hexagons in Benzenoid Hydrocarbons
The possible values of the number of Kekulé structures ( K) of a benzenoid hydrocarbon with h hexagons are examined. For normal benzenoids the lowest possible value of K is h + 1. Based on this result the benzenoid systems which have K up to 24 are determined. A number of results concerning enumeration and classification of benzenoid systems is reported.
1983 ◽
Vol 94
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pp. 188-192
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1990 ◽
Vol 209
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pp. 289-302
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1978 ◽
Vol 58
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pp. 180-184
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1991 ◽
Vol 247
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pp. 129-133
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2002 ◽
Vol 67
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pp. 751-768
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