54. Herndon WC (1974) Thermochemical parameters for benzenoid hydrocarbons. Thermochim
Acta 8:225–237
55. Herndon WC, Biedermann PU, Agranat I (1998) Molecular structure parameters and
predictions of enthalpies of formation for catacondensed and pericondensed polycyclic
aromatic hydrocarbons. J Org Chem 63:7445–7448
56. Herndon WC, Connor DA, Li P (1990) Structure–enthalpy relationships in polycyclic
cata-condensed aromatic hydrocarbons. Pure Appl Chem 62:435–444
57. Herndon WC (1975) Resonance theory. VIII. Reactivities of benzenoid hydrocarbons. J Org
Chem 40:3583–3586
58. Wilcox CF, Gutman I, Trinajstić N (1975) Graph theory and molecular orbitals—XI.
Aromatic substitution. Tetrahedron 31:147–152
59. Biermann D, Schmidt W (1980) Diels-Alder reactivity of polycyclic aromatic hydrocarbons.
1. Acenes and benzologs. J Am Chem Soc 102:3163–3173
60. Biermann D, Schmidt W (1980) Diels-Alder reactivity of polycyclic aromatic hydrocarbons.
2. Phenes and starphenes. J Am Chem Soc 102:3173–3181
61. Hall GG (1988) Resonance and reactivity. J Mol Struct (Theochem) 169:233–244
62. Gutman I (1998) Topologically activated sites in benzenoid hydrocarbons. Polyacenes and
benzo–annelated polyacenes. J Serb Chem Soc 63:987–993
63. Herndon WC (1976) Ionization potentials of π-molecular hydrocarbons. J Am Chem Soc
98:887–889
64. Eilfeld P, Schmidt W (1981) Resonance theoretical approach to the calculation of the first
IP’s of polycyclic aromatics. J Electron Spectr Rel Phenom 24:101–120
65. Randić M (1974) On the characterization of local aromatic properties of benzenoid
hydrocarbons. Tetrahedron 30:2067–2074
66. Randić M (1975) Graph theoretical approach to local and overall aromaticity of benzenoid
hydrocarbons. Tetrahedron 31:1477–1481
67. Randić M (1976) Conjugated circuits and resonance energies of benzenoid hydrocarbons.
Chem Phys Lett 38:68–70
68. Randić M (1977) Aromaticity and conjugation. J Am Chem Soc 99:444–450
69. Randić M (1977) A graph theoretical approach to conjugation and resonance energies of
hydrocarbons. Tetrahedron 33:1905–1920
70. Klein DJ (1992) Aromaticity via Kekulé structures and conjugated circuits. J Chem Educ
69:691–694
71. Gutman I, Cyvin SJ (1989) Conjugated circuits in benzenoid hydrocarbons. J Mol Struct
(Theochem) 184:159–163
72. Randić M, Nikolić S, Trinajstić N (1987) The conjugated circuit model: on the selection of
parameters for computing the resonance energies. In: King RB, Rouvray DH (eds) Graph
theory and topology in chemistry. Elsevier, Amsterdam, pp 429–447
73. Randić M, Trinajstić N (1987) Critical test for resonance energies. J Am Chem Soc
109:6923–6926
74. Ciesielski A, Krygowski TM, Cyrański MK, Balaban AT (2011) Defining rules of
aromaticity: a unified approach to the Hückel, Clar and Randić concepts. Phys Chem Chem
Phys 13:3737–3747
75. Randić M, Balaban AT (2004) Partitioning of π-electrons in rings of polycyclic conjugated
hydrocarbons. Part 1: catacondensed benzenoids. Polyc Arom Comp 24:173–193
76. Balaban AT, Randić M (2004) Partitioning of π-electrons in rings of polycyclic benzenoid
hydrocarbons. 2. Catacondensed coronoids. J Chem Inf Comput Sci 44:50–59
77. Balaban AT, Randić M (2004) Partitioning of π-electrons in rings of polycyclic conjugated
hydrocarbons. Part 3. Perifusenes. New J Chem 28:800–806
78. Balaban AT, Randić M (2004) Partitioning of π-electrons in rings of polycyclic conjugated
hydrocarbons. 5. Nonalternant hydrocarbons. J Chem Inf Comput Sci 44:1701–1707
79. Randić M (2004) Algebraic Kekulé formulas for benzenoid hydrocarbons. J Chem Inf
Comput Sci 44:365–372
11 Paradise Lost—π-Electron Conjugation in Homologs …
317
Acta 8:225–237
55. Herndon WC, Biedermann PU, Agranat I (1998) Molecular structure parameters and
predictions of enthalpies of formation for catacondensed and pericondensed polycyclic
aromatic hydrocarbons. J Org Chem 63:7445–7448
56. Herndon WC, Connor DA, Li P (1990) Structure–enthalpy relationships in polycyclic
cata-condensed aromatic hydrocarbons. Pure Appl Chem 62:435–444
57. Herndon WC (1975) Resonance theory. VIII. Reactivities of benzenoid hydrocarbons. J Org
Chem 40:3583–3586
58. Wilcox CF, Gutman I, Trinajstić N (1975) Graph theory and molecular orbitals—XI.
Aromatic substitution. Tetrahedron 31:147–152
59. Biermann D, Schmidt W (1980) Diels-Alder reactivity of polycyclic aromatic hydrocarbons.
1. Acenes and benzologs. J Am Chem Soc 102:3163–3173
60. Biermann D, Schmidt W (1980) Diels-Alder reactivity of polycyclic aromatic hydrocarbons.
2. Phenes and starphenes. J Am Chem Soc 102:3173–3181
61. Hall GG (1988) Resonance and reactivity. J Mol Struct (Theochem) 169:233–244
62. Gutman I (1998) Topologically activated sites in benzenoid hydrocarbons. Polyacenes and
benzo–annelated polyacenes. J Serb Chem Soc 63:987–993
63. Herndon WC (1976) Ionization potentials of π-molecular hydrocarbons. J Am Chem Soc
98:887–889
64. Eilfeld P, Schmidt W (1981) Resonance theoretical approach to the calculation of the first
IP’s of polycyclic aromatics. J Electron Spectr Rel Phenom 24:101–120
65. Randić M (1974) On the characterization of local aromatic properties of benzenoid
hydrocarbons. Tetrahedron 30:2067–2074
66. Randić M (1975) Graph theoretical approach to local and overall aromaticity of benzenoid
hydrocarbons. Tetrahedron 31:1477–1481
67. Randić M (1976) Conjugated circuits and resonance energies of benzenoid hydrocarbons.
Chem Phys Lett 38:68–70
68. Randić M (1977) Aromaticity and conjugation. J Am Chem Soc 99:444–450
69. Randić M (1977) A graph theoretical approach to conjugation and resonance energies of
hydrocarbons. Tetrahedron 33:1905–1920
70. Klein DJ (1992) Aromaticity via Kekulé structures and conjugated circuits. J Chem Educ
69:691–694
71. Gutman I, Cyvin SJ (1989) Conjugated circuits in benzenoid hydrocarbons. J Mol Struct
(Theochem) 184:159–163
72. Randić M, Nikolić S, Trinajstić N (1987) The conjugated circuit model: on the selection of
parameters for computing the resonance energies. In: King RB, Rouvray DH (eds) Graph
theory and topology in chemistry. Elsevier, Amsterdam, pp 429–447
73. Randić M, Trinajstić N (1987) Critical test for resonance energies. J Am Chem Soc
109:6923–6926
74. Ciesielski A, Krygowski TM, Cyrański MK, Balaban AT (2011) Defining rules of
aromaticity: a unified approach to the Hückel, Clar and Randić concepts. Phys Chem Chem
Phys 13:3737–3747
75. Randić M, Balaban AT (2004) Partitioning of π-electrons in rings of polycyclic conjugated
hydrocarbons. Part 1: catacondensed benzenoids. Polyc Arom Comp 24:173–193
76. Balaban AT, Randić M (2004) Partitioning of π-electrons in rings of polycyclic benzenoid
hydrocarbons. 2. Catacondensed coronoids. J Chem Inf Comput Sci 44:50–59
77. Balaban AT, Randić M (2004) Partitioning of π-electrons in rings of polycyclic conjugated
hydrocarbons. Part 3. Perifusenes. New J Chem 28:800–806
78. Balaban AT, Randić M (2004) Partitioning of π-electrons in rings of polycyclic conjugated
hydrocarbons. 5. Nonalternant hydrocarbons. J Chem Inf Comput Sci 44:1701–1707
79. Randić M (2004) Algebraic Kekulé formulas for benzenoid hydrocarbons. J Chem Inf
Comput Sci 44:365–372
11 Paradise Lost—π-Electron Conjugation in Homologs …
317