Relevant bibliographies by topics / Or Kekul'e structures)

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Or Kekul'e structures)'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Or Kekul'e structures)"

1

Balaban, Alexandru, and Milan Randić. "Perfect Matchings in Polyhexes, or Recent Graph-theoretical Contributions to Benzenoids." JUCS - Journal of Universal Computer Science 13, no. (11) (2007): 1514–39. https://doi.org/10.3217/jucs-013-11-1514.

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After an introduction on the history of polycyclic aromatic compounds, recent advances in the theory of benzenoids are briefly reviewed. Then using systems with 4, 5, or 6 benzenoid rings for illustration, the partition of the P π-electrons among the rings of the benzenoid is presented, followed by a different way of examining the distribution of these π-electrons which is called the signature of the benzenoid, consisting in six integers from s6 to s1. The P π-electrons are divided between the two sums s6 + s5 + s2 + s1 and s4 + s3 characterizing thereby the closeness of benzenoids to all-reso
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2

Gutman, Ivan. "Kekulé Structures in Fluoranthenes." Zeitschrift für Naturforschung A 65, no. 5 (2010): 473–76. http://dx.doi.org/10.1515/zna-2010-0513.

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Fluoranthenes are polycyclic conjugated molecules consisting of two benzenoid fragments, connected by two carbon-carbon bonds so as to form a five-membered ring. Fluoranthenes possessing Kekul´e structures are classified into three types, depending on the nature of the two carbon-carbon bonds connecting the two benzenoid fragments. Either both these bonds are essentially single (i. e., single in all Kekul´e structures), or both are essentially double (i. e., double in all Kekul´e structures), or one is essentially single and the other is essentially double. All Kekul´ean fluoranthenes have equ
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3

Klein, D. J. "Aromaticity via Kekule structures and conjugated circuits." Journal of Chemical Education 69, no. 9 (1992): 691. http://dx.doi.org/10.1021/ed069p691.

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Cyvin, S. J., J. Brunvoll, and B. N. Cyvin. "Distribution of K , the Number of Kekulé Structures in Benzenoid Hydrocarbons Part IV. Benzenoids with 10 and 11 Hexagons." Zeitschrift für Naturforschung A 41, no. 12 (1986): 1429–30. http://dx.doi.org/10.1515/zna-1986-1212.

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An approximate asymptotic formula is derived for the number of normal benzenoids. For this category and h (number of hexagons) = 10 and 11 all numbers of Kekulfe structures were computer and systematized.
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Cigher, S., D. Vukičević, and M. V. Diudea. "On Kekulé structures count." Journal of Mathematical Chemistry 45, no. 2 (2008): 279–86. http://dx.doi.org/10.1007/s10910-008-9404-5.

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Brendsdal, E., and S. J. Cyvin. "Kekulé structures of footballene." Journal of Molecular Structure: THEOCHEM 188, no. 1-2 (1989): 55–66. http://dx.doi.org/10.1016/0166-1280(89)85025-0.

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7

Křivka, Pavel, and Nenad Trinajstić. "Parity of Kekulé structures revisited." Collection of Czechoslovak Chemical Communications 50, no. 2 (1985): 291–99. http://dx.doi.org/10.1135/cccc19850291.

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8

King, R. Bruce. "Strained Configurations in Three-Dimensional Analogues of Kekulé-Type Structures for Deltahedral Boranes." Collection of Czechoslovak Chemical Communications 67, no. 6 (2002): 751–68. http://dx.doi.org/10.1135/cccc20020751.

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Localized structures analogous to the Kekulé structures for benzenoid hydrocarbons can be constructed for the deltahedral boranes BnHn2-. These localized structures contain exactly three two-center two-electron (2c-2e) B-B bonds and n - 2 three-center two-electron (3c-2e) B-B-B bonds. The number of equivalent such Kekulé-type structures corresponds to the index of the symmetry group of the Kekulé structure, K, in the symmetry group, D, of the deltahedron. Three-dimensional Kekulé-type structures with the following configurations exhibit excessive strain and are therefore unfavorable: (i) struc
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9

Hansen, Pierre, and Maolin Zheng. "The Maximum Number of Kekule Structures of Cata-condensed Polyhexes." Zeitschrift für Naturforschung A 48, no. 10 (1993): 1031–38. http://dx.doi.org/10.1515/zna-1993-1012.

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Abstract Let H denote a simply-connected cata-condensed polyhex. It is shown that if H has three hexagons in a row it does not have a maximum number of Kekulé structures. Otherwise, its number of Kekulé structures is equal to its number of sets of disjoint hexagons (including the empty set). These results lead to an efficient algorithm to determine simply-connected cata-condensed polyhexes with a maximum number of Kekulé structures. A table of such values of H with up to 100 hexagons is provided.
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Vukicevic, Damir, Jelena Djurdjevic, and Ivan Gutman. "On the number of Kekulé structures of fluoranthene congeners." Journal of the Serbian Chemical Society 75, no. 8 (2010): 1093–98. http://dx.doi.org/10.2298/jsc091207077v.

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The Kekul? structure count K of fluoranthene congeners is studied. It is shown that for such polycyclic conjugated ?-electron systems, either K = 0 or K ? 3. Moreover, for every t ? 3, there are infinitely many fluoranthene congeners having exactly t Kekul? structures. Three classes of Kekul?an fluoranthenes are distinguished: (i) ?0 - fluoranthene congeners in which neither the male nor the female benzenoid fragment has Kekul? structures, (ii) ?m - fluoranthene congeners in which the male benzenoid fragment has Kekul? structures, but the female does not, and (iii) ?fm - fluoranthene congeners
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Dissertations / Theses on the topic "Or Kekul'e structures)"

1

Lin, Ying-Ting, and 林映廷. "Kekulé Structures of Fullerenes: a Theoretical View of Stability and Precursors." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3s6p4s.

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碩士<br>國立臺灣大學<br>化學研究所<br>106<br>Two topics are included in this thesis. In the first topic, the relation between number of Kekulé structures and fullerene’s stability is studied. Kekulé structures in fullerene chemistry correspond to perfect matchings in mathematics, so that we could introduce the FKT algorithm in mathematics on fullerenes to enumerate their Kekulé structures. The number of Kekulé structures in distinct fullerene isomers up to C120 and IPR isomers up to C160 are counted, demonstrating the relatively strong correlation between resonance energy, which is an index of π- electron
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Books on the topic "Or Kekul'e structures)"

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Cyvin, Sven J. Kekulé structures in benzenoid hydrocarbons. Springer-Verlag, 1988.

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Cyvin, S. J., and I. Gutman. Kekulé Structures in Benzenoid Hydrocarbons. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-00892-8.

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Cyvin, S. J. Kekulé Structures in Benzenoid Hydrocarbons. Springer Berlin Heidelberg, 1988.

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4

H, Wotiz John, ed. The Kekulé riddle: A challenge for chemists and psychologists. Cache River Press, 1993.

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Book chapters on the topic "Or Kekul'e structures)"

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Gutman, Ivan, and Sven Josef Cyvin. "Kekulé Structures." In Introduction to the Theory of Benzenoid Hydrocarbons. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-87143-6_5.

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Tudoran, Marina A., and Mihai V. Putz. "Kekulé Structure." In New Frontiers in Nanochemistry. Apple Academic Press, 2020. http://dx.doi.org/10.1201/9780429022944-21.

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Lučić, Bono, Ante Miličević, Sonja Nikolić, and Nenad Trinajstić. "Coding and Ordering Benzenoids and Their Kekulé Structures." In Carbon Bonding and Structures. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-1733-6_9.

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Cyvin, S. J., and I. Gutman. "Kekulé Structures and their Numbers: General Results." In Lecture Notes in Chemistry. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-00892-8_3.

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Cyvin, S. J., and I. Gutman. "Introduction to the Enumeration of Kekulé Structures." In Lecture Notes in Chemistry. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-00892-8_4.

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Cyvin, S. J., and I. Gutman. "Distribution of K, and Kekulé Structure Statistics." In Lecture Notes in Chemistry. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-662-00892-8_18.

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7

Vukičević, Damir, and Milan Randić. "Detailed Atlas of Kekulé Structures of the Buckminsterfullerene." In The Mathematics and Topology of Fullerenes. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-94-007-0221-9_8.

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8

Bao, Changhua. "Coexistence of Flat Band and Kekulé Order." In Electronic Band Structure Engineering and Ultrafast Dynamics of Dirac Semimetals. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-5325-7_5.

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Bao, Changhua. "Chiral Symmetry Breaking in Kekulé-Ordered Graphene." In Electronic Band Structure Engineering and Ultrafast Dynamics of Dirac Semimetals. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-5325-7_4.

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10

Fuji, Zhang, Guo Xiaofeng, and Chen Rongsi. "The existence of Kekulé structures in a benzenoid system." In Topics in Current Chemistry. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/3-540-51505-4_23.

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Conference papers on the topic "Or Kekul'e structures)"

1

Kertesz, M. "The electronic structure of some non-kekule conjugated polymers." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.835216.

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Journal articles
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