Quadrupole moments, dipole quadrupole A and quadrupole C polarizabilities by means of perturbation theory
β Scribed by LL. Espinoza; A. Toro; P. Fuentealba
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 653 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0020-7608
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β¦ Synopsis
Abstract
Quadrupole moments, dipole quadrupole polarizability A, and quadrupole polarizability C values have been obtained for a set of organic molecules, in both the ground and first singlet excited states, by means of RayleighβSchrΓΆdinger perturbation theory. Computations for Ο systems have been carried out using the PPPβSCF procedure. Results are discussed through the paper and compared with available experimental and theoretical information. Quadrupole moments are shown to be very sensitive to the quality of the wave functions, and the A and C polarizabilities are highly dependent on geometries.
π SIMILAR VOLUMES
We rely on a finite-field approach to calculate the static dipole ((u) and quadrupole ( C) polarizability and the first (/3) and second ( y) dipole hyperpolarizability of methane. Our best, CCSD( T) values for LY, /II and the mean value of y and C, obtained at&=2.052 aowitha (lls7p4d2f/6s2pld)[6s4p4
Second-order pcrturbatron rheory rs used fo calculate the sphcruA harmoruc coefficients of the angular pau correlatton function and the drelectnc constant and Kerr paramctcr of Stockmayer thuds wtth dtpoles and quadrupoles The results mdrcate that the drclectrrc constant and the Kerr parameter both