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Theoretical Studies on the Structure and Spectroscopic Properties of 2,4-D (2,4-Diclorofenoxiacetic Acid)
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Author(s): María G. Andino (Universidad Nacional del Nordeste, Argentina), Mariela I. Profeta (Universidad Nacional del Nordeste, Argentina), Jorge M. Romero (Universidad Nacional del Nordeste, Argentina), Nelly L. Jorge (Universidad Nacional del Nordeste, Argentina)and Eduardo A. Castro (Research Institute of Theoretical and Applied Physical-Chemistry (INIFTA), Argentina)
Copyright: 2013
Pages: 11
Source title:
Methodologies and Applications for Chemoinformatics and Chemical Engineering
Source Author(s)/Editor(s): A. K. Haghi (University of Guilan, Iran)
DOI: 10.4018/978-1-4666-4010-8.ch013
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Abstract
The 2,4-dichlorophenoxyacetic acid (2,4-D) is applied to and recovered from the leaf surfaces of garden bean and corn plants. This paper examines the theoretical study of the 2,4-D IR and UV spectra as well as the determination of its optimized molecular structure. Theoretical calculations are performed at the density functional theory (DFT) levels. The different structural and electronic effects determining the molecular stability of the conformers are discussed in a comparative fashion. The optimized geometry was calculated via the B3LYP method with 6-311G(d,p) and 6-311++G(d,p) basis sets and the FT-IR spectra was calculated by the density functional B3LYP method with the 6-311++G(d,p) basis set. The scaled theoretical wavenumbers show good agreement with the experimental values. A detailed interpretation of the infrared spectra of 2,4-D is reported.
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