Results 151 to 160 of about 3,914 (183)

Polarography of Benzenoid Aromatic Hydrocarbons

Russian Chemical Reviews, 1969
This review summarises the results of the study of the reduction and oxidation in protogenic, aprotic, and strongly acidic solutions of benzenoid polynuclear aromatic hydrocarbons whose molecules do not contain electrochemically active substituents.
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Bond resonance energies of polycyclic benzenoid and non-benzenoid hydrocarbons

Journal of the Chemical Society, Perkin Transactions 2, 1996
The bond resonance energy represents the contribution of a given π bond in a molecule to the topological resonance energy. Bond resonance energies for 43 typical polycyclic conjugated hydrocarbons and five of their molecular ions have been evaluated and critically examined.
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Benzenoid rings resonance energies and local aromaticity of benzenoid hydrocarbons

Journal of Computational Chemistry, 2018
In this article, we consider partitioning of the analytical expression for resonance energy (RE) in smaller benzenoid hydrocarbons, to individual benzenoid rings of polycyclic molecules. The analytical expression for molecular RE, available since 1976, is given by the count of all linearly independent conjugated circuit in all Kekulé structures in a ...
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Local aromatic properties of benzenoid hydrocarbons

Pure and Applied Chemistry, 1980
Abstract
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On dioxo derivatives of benzenoid hydrocarbons

Journal of Molecular Structure: THEOCHEM, 1999
Abstract Extending a problem occurring in connection with the stability order of the tautomers of hypericin, we examine the topological factors influencing the stability of the isomeric dioxo derivatives of benzenoid hydrocarbons, in particular the rules determining the number of Kekule structures in them. Depending on the position of the oxo groups,
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Semiempirical Valence Bond Views for Benzenoid Hydrocarbons

1990
Because the π-networks of benzenoid hydrocarbons are the classical prototypical example of delocalized bonding, they provide a crucial test for chemical-bonding theories. Here there is revealed a systematic organization for valence-bond views to describe such π-bonding.
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Constant-isomer series of benzenoid hydrocarbons

Theoretica Chimica Acta, 1992
The constant-isomer series are studied in relation to the periodic table of benzenoid hydrocarbons. General properties of the table are formulated in terms of explicit expressions. In particular a general expression for the formulas (CnHs) of the ground forms of the constant-isomer series was achieved. The numbers of the isomers (cardinalities of CnHs)
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Algebraic Kekule Structures of Benzenoid Hydrocarbons

Journal of chemical information and computer sciences, 2004
An algebraic Kekule structure of a benzenoid hydrocarbon is obtained from an ordinary Kekule structure by inscribing into each hexagon the number of pi-electrons which according to this Kekule structure belong to this hexagon. We show that for catafusenes (but not for perifusenes), there is one-to-one correspodence between ordinary and algebraic Kekule
Graovac, Ante, Gutman, Ivan, Vukičević, Damir   +2 more
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Benzenoid Hydrocarbons

1970
Rudolf Zahradník, Jiří Pancíř
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Benzenoid Hydrocarbons

1989
Ivan Gutman, Sven Josef Cyvin
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