Abstract
The existence of Kekulé structures in a benzenoid system is the first fundamental problem in the topological theory of benzenoid systems. It was considered as one of the most difficult open problems in this theory. Many investigations have been made in order to find necessary and sufficient conditions for the existence of Kekulé structures in a benzenoid system. Some fairly simple conditions which are both necessary and sufficient have been given in the last few years. In this chapter we review the main results and give a rigorous proof for some necessary and sufficient conditions for the existence of Kekulé structures in a benzenoid system. In addition, by using the above results, a construction method of some concealed non-Kekuléan benzenoid systems is given.
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© 1990 Springer-Verlag
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Fuji, Z., Xiaofeng, G., Rongsi, C. (1990). The existence of Kekulé structures in a benzenoid system. In: Gutman, I., Cyvin, S.J. (eds) Advances in the Theory of Benzenoid Hydrocarbons. Topics in Current Chemistry, vol 153. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-51505-4_23
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DOI: https://doi.org/10.1007/3-540-51505-4_23
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