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 exper
The calculation of hyperpolarizabilities of organic molecules
โ Scribed by I.A. Maslianitsin; V.D. Shigorin; G.P. Shipulo
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 292 KB
- Volume
- 194
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
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 by both the sum-over-state approach and the finite field method, indicate the practical equivalence of the two methods.
๐ SIMILAR VOLUMES
## C&uLtions of etcctric +&&ifitics nf molecuf~s by ttrc hfIND013 semicmpiriwl SW M8 method have been extended to ltypcrpolar~~dbilitics. Kesults for CH31:, CIIZFZ, and CflF3 afree much better witb experiment 1l~r11 those Ixuviourly rcported.
The inductive properties of a non-polar diatomic molecule in a static non-uniform electric field are best described in terms of its dipole polarizability (a), second hyperpolarizability (y), quadrupole-quadrupole polarizability (C) and dipole-dipole-quadrupole polarizability (B). We present formulae
Calculations are reported on the dipole moments, transition energies, and hyperpolarizabilities of 1-amino-4-nitrobutadiene and its four aza-analogs using a semiempirical sum-over-states method. The results obtained suggest that the presence of nitrogen in the unsaturated chain can have a substantia