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Aromaticity Today: Energetic and Structural Criteria
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Abstract
Aromaticity appears to be among the most controversial concepts in modern chemistry. The present paper addresses current controversies in development and applications of the two main criteria of aromaticity, namely, energetic and structural criteria. Various types of resonance energy with an emphasis on homodesmotic and isodesmic stabilization energies have been discussed. Reliability of such structural criteria of aromaticity as equalization of carbon-carbon bond lengths and stability with respect to out-of-plane distortions of a molecular structure has been analyzed using various examples.
Keywords (Audience):
Upper-Division UndergraduateKeywords (Domain):
Organic ChemistryKeywords (Subject):
Aromatic CompoundsCiting Articles
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This article has been cited by 24 ACS Journal articles (5 most recent appear below).

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Theoretical Notions of Aromaticity and Antiaromaticity: Phenalenyl Ions versus Fluorenyl Ions
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Dications of Fluorenylidenes. The Relationship between Redox Potentials and Antiaromaticity for Meta- and Para-Substituted Diphenylmethylidenefluorenes
Nancy S. Mills, Cornelia Tirla, Michele A. Benish, Amber J. Rakowitz, Lisa M. Bebell, Caroline M. M. Hurd, and Anna L. M. BriaThe Journal of Organic Chemistry2005 70 (26), 10709-10716Dications of Fluorenylidenes. The Relationship between Redox Potentials and Antiaromaticity for Meta- and Para-Substituted Diphenylmethylidenefluorenes
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Theoretical Evaluation of Electron Delocalization in Aromatic Molecules by Means of Atoms in Molecules (AIM) and Electron Localization Function (ELF) Topological Approaches
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Antiaromaticity in Fluorenylidene Dications. Experimental and Theoretical Evidence for the Relationship between the HOMO/LUMO Gap and Antiaromaticity
Nancy S. Mills, Amalia Levy, and Benjamin F. PlummerThe Journal of Organic Chemistry2004 69 (20), 6623-6633Antiaromaticity in Fluorenylidene Dications. Experimental and Theoretical Evidence for the Relationship between the HOMO/LUMO Gap and Antiaromaticity
Nancy S. Mills, Amalia Levy, and Benjamin F. PlummerThe Journal of Organic Chemistry2004 69 (20), 6623-6633The relationship between the calculated energy of the HOMO−LUMO gap, where (εLUMO − εHOMO)/2 is defined as ΔHL, and of the longest wavelength transition in the UV−visible spectrum, ΔE, was examined for a series of aromatic and antiaromatic cations and ...
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- Received: August 03, 2009
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