105. Fries K (1927) Über bicyclische Verbindungen und ihren Vergleich mit dem Naphthalin, III
Mitteilung. Ann Chem 454:121–324
106. Gründler W (1982) Signifikante Elektronenstrukturen für benzenoide Kohlenwasserstoffe.
Wiss Z Univ Halle 31:97–116
107. Graovac A, Gutman I, Randić M, Trinajstić N (1973) Kekulé index for valence bond
structures of conjugated polycyclic systems. J Am Chem Soc 95:6267–6273
108. Sedlar J, Anđelić I, Gutman I, Vukičević D, Graovac A (2006) Vindicating the Pauling–
bond–order concept. Chem Phys Lett 427:418–420
109. Clar E (1972) The aromatic sextet. Wiley, London
110. Solá M (2013) Forty years of Clar’s aromatic π-sextet rule. Frontiers Chem 1(22):1–8
111. Hall GG (1977) On the eigenvalues of molecular graphs. Mol Phys 33:551–557
112. Gutman I, Marković S, Hall GG (1995) Revisiting a simple regularity for benzenoid
hydrocarbons: total π-electron energy versus the number of Kekulé structures. Chem Phys
Lett 234:21–24
113. Gutman Radenković (2006) Extending and modifying the Hall rule. Chem Phys Lett
423:382–385
114. Radenković S, Gutman I (2009) Stability order of isomeric benzenoid hydrocarbons and
Kekulé structure count. J Serb Chem Soc 74:155–158
115. Cioslowski J, Dobrowolski JC (2003) Structural dependence of thermodynamic stability of
unbranched catacondensed benzenoid hydrocarbons. Chem Phys Lett 371:317–320
116. Cyvin SJ, Gutman I (1988) Kekulé Structures in Benzenoid Hydrocarbons. Springer, Berlin
117. Gutman I (1990) Nonaromatic benzenoid hydrocarbons. Pure Appl Chem 62:429–434
118. Gutman I (2010) Kekulé structures in fluoranthenes. Z Naturforsch 65a:473–476
119. Gutman I, Stanković S, Kovačević R, Ɖurđević J, Furtula B (2005) Anomalous cyclic
conjugation in benzenoid molecules with a small number of Kekulé structures. Indian J
Chem 44A:1751–1755
120. Gutman I, Marković S, Jeremić S (2010) A case of breakdown of the Kekulé–structure
model. Polyc Arom Comp 30:240–246
121. Vukičević D, Ɖurđević J, Gutman I (2012) Limitations of Pauling bond order concept. Polyc
Arom Comp 32:36–47
122. Marković S, Ɖurđević J, Jeremić S, Gutman I (2010) Diradical character of some
fluoranthenes. J Serb Chem Soc 75:1241–1249
123. Marković, S., Ɖurđević, J., Jeremić, J., Gutman, I.: triplet fluoranthenes: aromaticity versus
unpaired electrons, J Mol Model 17, 805–810 (2011)
124. Gutman I (2005) Cyclic conjugation energy effects in polycyclic π-electron systems.
Monatsh Chem 136:1055–1069
125. Gutman I (2010) Theory of the PCP effect and related phenomena. J Math Chem 47:1309–
1312
126. Gutman I, Radenković S, Linert W (2010) Pairwise energy effect of cyclic conjugation in
benzo–annelated perylene. Monatsh Chem 141:401–407
127. Balaban AT, Gutman I, Jeremić S, Ɖurđević J (2011) Effect of benzo–annelation on cyclic
conjugation. Monatsh Chem 142:53–57
128. Fatoorehchi, H., Gutman, I., Abolghasemi, H (in press) A combined technique for
computation of energy–effect of cycles in conjugated molecules. J Math Chem
129. Aihara J (2006) Circuit resonance energy: a key quantity that links energetic and magnetic
criteria of aromaticity. J Am Chem Soc 128:2873–2879
130. Aihara J (2008) Topological resonance energy, bond resonance energy, and circuit resonance
energy. J Phys Org Chem 21:79–85
131. Chauvin R, Lepetit C, Fowler PW, Malrieu JP (2010) The chemical roots of the matching
polynomial. Phys Chem Chem Phys 12:5295–5306
132. Chauvin R, Lepetit C (2013) The fundamental chemical equation of aromaticity. Phys Chem
Chem Phys 15:3855–3860
133. Gutman I, Turković N, Jovičić J (2004) Cyclic conjugation in benzo-annelated perylenes:
how empty is the “empty” ring? Monatsh Chem 135:1389–1394
11 Paradise Lost—π-Electron Conjugation in Homologs …
319
Mitteilung. Ann Chem 454:121–324
106. Gründler W (1982) Signifikante Elektronenstrukturen für benzenoide Kohlenwasserstoffe.
Wiss Z Univ Halle 31:97–116
107. Graovac A, Gutman I, Randić M, Trinajstić N (1973) Kekulé index for valence bond
structures of conjugated polycyclic systems. J Am Chem Soc 95:6267–6273
108. Sedlar J, Anđelić I, Gutman I, Vukičević D, Graovac A (2006) Vindicating the Pauling–
bond–order concept. Chem Phys Lett 427:418–420
109. Clar E (1972) The aromatic sextet. Wiley, London
110. Solá M (2013) Forty years of Clar’s aromatic π-sextet rule. Frontiers Chem 1(22):1–8
111. Hall GG (1977) On the eigenvalues of molecular graphs. Mol Phys 33:551–557
112. Gutman I, Marković S, Hall GG (1995) Revisiting a simple regularity for benzenoid
hydrocarbons: total π-electron energy versus the number of Kekulé structures. Chem Phys
Lett 234:21–24
113. Gutman Radenković (2006) Extending and modifying the Hall rule. Chem Phys Lett
423:382–385
114. Radenković S, Gutman I (2009) Stability order of isomeric benzenoid hydrocarbons and
Kekulé structure count. J Serb Chem Soc 74:155–158
115. Cioslowski J, Dobrowolski JC (2003) Structural dependence of thermodynamic stability of
unbranched catacondensed benzenoid hydrocarbons. Chem Phys Lett 371:317–320
116. Cyvin SJ, Gutman I (1988) Kekulé Structures in Benzenoid Hydrocarbons. Springer, Berlin
117. Gutman I (1990) Nonaromatic benzenoid hydrocarbons. Pure Appl Chem 62:429–434
118. Gutman I (2010) Kekulé structures in fluoranthenes. Z Naturforsch 65a:473–476
119. Gutman I, Stanković S, Kovačević R, Ɖurđević J, Furtula B (2005) Anomalous cyclic
conjugation in benzenoid molecules with a small number of Kekulé structures. Indian J
Chem 44A:1751–1755
120. Gutman I, Marković S, Jeremić S (2010) A case of breakdown of the Kekulé–structure
model. Polyc Arom Comp 30:240–246
121. Vukičević D, Ɖurđević J, Gutman I (2012) Limitations of Pauling bond order concept. Polyc
Arom Comp 32:36–47
122. Marković S, Ɖurđević J, Jeremić S, Gutman I (2010) Diradical character of some
fluoranthenes. J Serb Chem Soc 75:1241–1249
123. Marković, S., Ɖurđević, J., Jeremić, J., Gutman, I.: triplet fluoranthenes: aromaticity versus
unpaired electrons, J Mol Model 17, 805–810 (2011)
124. Gutman I (2005) Cyclic conjugation energy effects in polycyclic π-electron systems.
Monatsh Chem 136:1055–1069
125. Gutman I (2010) Theory of the PCP effect and related phenomena. J Math Chem 47:1309–
1312
126. Gutman I, Radenković S, Linert W (2010) Pairwise energy effect of cyclic conjugation in
benzo–annelated perylene. Monatsh Chem 141:401–407
127. Balaban AT, Gutman I, Jeremić S, Ɖurđević J (2011) Effect of benzo–annelation on cyclic
conjugation. Monatsh Chem 142:53–57
128. Fatoorehchi, H., Gutman, I., Abolghasemi, H (in press) A combined technique for
computation of energy–effect of cycles in conjugated molecules. J Math Chem
129. Aihara J (2006) Circuit resonance energy: a key quantity that links energetic and magnetic
criteria of aromaticity. J Am Chem Soc 128:2873–2879
130. Aihara J (2008) Topological resonance energy, bond resonance energy, and circuit resonance
energy. J Phys Org Chem 21:79–85
131. Chauvin R, Lepetit C, Fowler PW, Malrieu JP (2010) The chemical roots of the matching
polynomial. Phys Chem Chem Phys 12:5295–5306
132. Chauvin R, Lepetit C (2013) The fundamental chemical equation of aromaticity. Phys Chem
Chem Phys 15:3855–3860
133. Gutman I, Turković N, Jovičić J (2004) Cyclic conjugation in benzo-annelated perylenes:
how empty is the “empty” ring? Monatsh Chem 135:1389–1394
11 Paradise Lost—π-Electron Conjugation in Homologs …
319