Excitation energies are calculated for the states arising from excitation of an outer-most valence electron of HzS, PH3 and S& by the use of the one-center expansion SCF MO and the improved virtual orbital approximations. The results are compared with experimental data.
Calculation of excited states of H2O and NH3 by the one-center expansion approximation
β Scribed by Yasuyo Hatano; Tsutomu Nomura; Kiyoshi Tanaka
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 549 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0020-7608
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β¦ Synopsis
Abstract
The potential energy curves with respect to the bond angle are calculated for some excited and ionized states of the H~2~O and NH~3~ molecules by the use of the oneβcenter expansion SCF MO and the improved virtual orbital approximations. The calculated equilibrium bond angles and force constants of bending motion are in good agreement with the experimental results.
π SIMILAR VOLUMES
For some lower-lying excited states of NH3 and H20, ab initio SCF calculations indicate the presence of potential maxima in the paths leading to dissociation into NH2 +H and OH +H. The occurrence of these maxima is probably connected with changes in the highest occupied molecular orbital during diss