Temporary Anion States of Three Herbicide Families

Electron scattering studies are used to locate the energies of temporary negative ion states of three chloro-substituted molecular families of herbicidal importance: salicylic and phenoxyacetic acids and acetamides. The correlation between these energies and the computed virtual orbital energies of...

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Bibliographic Details
Published in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2014-09, Vol.118 (35), p.7242-7248
Main Authors: Scheer, A. M, Aflatooni, K, Gallup, G. A, Burrow, P. D
Format: Article
Language:English
Subjects:
Acetamides - chemistry
Acetanilides - chemistry
Acetates - chemistry
Anions - chemistry
Benzoic Acid - chemistry
Electrons
Herbicides - chemistry
Models, Molecular
Photoelectron Spectroscopy
Salicylates - chemistry
Scattering, Radiation
Vibration
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Summary:Electron scattering studies are used to locate the energies of temporary negative ion states of three chloro-substituted molecular families of herbicidal importance: salicylic and phenoxyacetic acids and acetamides. The correlation between these energies and the computed virtual orbital energies of the compounds is examined and used to put the latter on an absolute energy scale. Such scaling of orbital energies permits the anion states of other members of these families, for which experimental data may not be available, to be estimated from the calculated orbital energies. Studies of electron reduction rates often rely on calculated LUMO energies as molecular descriptors. The use of measured anion energies as well as appropriately scaled orbital energies should serve to improve such studies in these and in related herbicides.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp409345m