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Chemical reactivity of quinclorac employing the HSAB local principle - Fukui function

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Mendoza Huizar L. H., Rios-Reyes C. H., Olvera-Maturano N. J., Robles J., Rodriguez J. A.

Open Chemistry

2015

vol. 13

issue 1

In the present work we have calculated several DFT reactivity descriptors for quinclorac at the B3LYP/6- 311++G(2d,2p) and MP2/6-311++G(2d,2p) levels of theory in order to analyze its reactivity. Reactivity descriptors such as ionization energy, molecular hardness, electrophilicity, condensed Fukui function and total energies were determined to predict the reactivity of quinclorac. The influence of the solvent was taken into account employing the PCM model. The results indicate that the solvation modifies the values of quinclorac reactivity descriptors. The Fukui function values predict that an electrophilic attack on quinclorac might cause a dechlorination, while a nucleophilic attack might lead to a decarboxylation and a free radical attack would cause a hydrogen substitution on the quinoline ring. Quinclorac in deprotonated form would be susceptible to decarboxylation through an electrophilic attack while nucleophilic and free radical attacks would cause an attack on the hydrogens of the ring.

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1 Open Chemistry

1 2015

1 Mendoza Huizar L. H.

1 Olvera-Maturano N. J.

1 Rios-Reyes C. H.

1 Robles J.

1 Rodriguez J. A.

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Chemical reactivity of quinclorac employing the HSAB local principle - Fukui function