Theoretical results for the absorption spectrum and electric properties of the enol and keto tautomeric forms of anil derivatives in the gas-phase and in solution are presented. The electronic properties in chloroform, acetonitrile, methanol, and water were determined by carrying out sequential Monte Carlo simulations and quantum mechanics calculations based on the time dependent density functional theory and on the second-order Møller–Plesset perturbation theory method. The results illustrate the role played by electrostatic interactions in the electronic properties of anil derivatives in a liquid environment. There is a significant increase of the dipole moment in solution (20%-100%) relative to the gas-phase value. Solvent effects are mild for the absorption spectrum and linear polarizability but they can be particularly important for first hyperpolarizability. A large first hyperpolarizability contrast between the enol and keto forms is observed when absorption spectra present intense lowest-energy absorption bands. Dynamic results for the first hyperpolarizability are in qualitative agreement with the available experimental results.
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21 June 2016
Research Article|
June 21 2016
Solvent effects on the absorption spectrum and first hyperpolarizability of keto-enol tautomeric forms of anil derivatives: A Monte Carlo/quantum mechanics study Available to Purchase
L. Adriano Junior;
L. Adriano Junior
Instituto de Física,
Universidade Federal de Goiás
, CEP 74.690-900, Goiânia, GO, Brazil
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T. L. Fonseca;
T. L. Fonseca
Instituto de Física,
Universidade Federal de Goiás
, CEP 74.690-900, Goiânia, GO, Brazil
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M. A. Castro
M. A. Castro
Instituto de Física,
Universidade Federal de Goiás
, CEP 74.690-900, Goiânia, GO, Brazil
Search for other works by this author on:
L. Adriano Junior
Instituto de Física,
Universidade Federal de Goiás
, CEP 74.690-900, Goiânia, GO, Brazil
T. L. Fonseca
Instituto de Física,
Universidade Federal de Goiás
, CEP 74.690-900, Goiânia, GO, Brazil
M. A. Castro
Instituto de Física,
Universidade Federal de Goiás
, CEP 74.690-900, Goiânia, GO, Brazil
J. Chem. Phys. 144, 234511 (2016)
Article history
Received:
April 20 2016
Accepted:
June 04 2016
Citation
L. Adriano Junior, T. L. Fonseca, M. A. Castro; Solvent effects on the absorption spectrum and first hyperpolarizability of keto-enol tautomeric forms of anil derivatives: A Monte Carlo/quantum mechanics study. J. Chem. Phys. 21 June 2016; 144 (23): 234511. https://doi.org/10.1063/1.4954064
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