First-order hyperpolarizabilities fl of some organic molecules are calculated by the CNDO/S-CI method, with an account taken of intermolecular interactions. The molecular hyperpolarizability is shown to deviate by more than one order of magnitude because of these interactions. The results, obtained
Calculations of electric dipole hyperpolarizability of polyatomic molecules
β Scribed by P. Lazzeretti; R. Zanasi
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 449 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Hartree-Fock perturbation theory is employed to compute electric dipole hyperpolarizabilities ofwater, ammo& and methane with three different CT0 basis sets. The results were extremely sensitive to the form of zero-order HT; wavefunctions. In mrne cases large discrepancies between computed and experimental values suggest that the latter ones must be reviewed. A comparison with other computations is also made.
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The electric dipole moment (p,), dipole polarizability (CQ) and first (Balk) and second (v,,& dipole hyperpolarizability of ammonia were obtained from finite-field self-consistent-field (SCF) and complete fourth-order many-body perturbation theory (MP4) calculations. With z as the C, axis, the follo
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