The static and dynamic first (β‖) and second (γ‖) hyperpolarizabilities of water, methanol, and dimethyl ether have been evaluated within the response function approach using a hierarchy of coupled cluster levels of approximation and doubly augmented correlation consistent atomic basis sets. For the three compounds, the electronic β‖ and γ‖ values calculated at the CCSD and CC3 levels are in good agreement with gas phase electric field-induced second harmonic generation (EFISHG) measurements. In addition, for dimethyl ether, the frequency dispersion of both properties follows closely recent experimental values [V. W. Couling and D. P. Shelton, J. Chem. Phys. 143, 224307 (2015)] demonstrating the reliability of these methods and levels of approximation. This also suggests that the vibrational contributions to the EFISHG responses of these molecules are small.
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28 July 2016
Research Article|
July 27 2016
Coupled cluster evaluation of the frequency dispersion of the first and second hyperpolarizabilities of water, methanol, and dimethyl ether
Pierre Beaujean
;
Pierre Beaujean
Laboratoire de Chimie Théorique, Unité de Chimie Physique Théorique et Structurale,
University of Namur
, Rue de Bruxelles 61, B-5000 Namur, Belgium
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Benoît Champagne
Benoît Champagne
a)
Laboratoire de Chimie Théorique, Unité de Chimie Physique Théorique et Structurale,
University of Namur
, Rue de Bruxelles 61, B-5000 Namur, Belgium
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a)
Electronic mail: [email protected]
J. Chem. Phys. 145, 044311 (2016)
Article history
Received:
May 19 2016
Accepted:
July 01 2016
Citation
Pierre Beaujean, Benoît Champagne; Coupled cluster evaluation of the frequency dispersion of the first and second hyperpolarizabilities of water, methanol, and dimethyl ether. J. Chem. Phys. 28 July 2016; 145 (4): 044311. https://doi.org/10.1063/1.4958736
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