CI-SD/ [ 3s2p] and MCSCF/ [ 3s2p] calculations were performed in order to obtain detailed information on the potential energy surface of Hz. Jahn-Teller distortions from the square geometry of H: are studied and it is shown that the optimal distorted geometries are slightly different from those obta
The potential energy surface of H4SiO4
β Scribed by Wagner B. De Almeida; Patrick J. O'Malley
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 352 KB
- Volume
- 178
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Three "true" minimum energy conformations and several transition state structures have been located on the potential energy surface for the H,SiO, molecule, calculated at the SCF/3-21G level of theory. Geometry optimisation for each stationary point has been performed with inclusion of polarization functions using the STO/6-3 lG* basis set. At the HF/6-31G* level of theory three minimum energy structures all possessing C, point group symmetry are located. Only one symmetric stationary point, possessing Dti symmetry, is located as a first-order transition state structure.
π SIMILAR VOLUMES
The potential energy surface of B4 has been studied ab initio using extended basis sets and coupled-cluster methods. The ground state ('A,,) is a singlet square that undergoes pseudo-Jahn-Teller distortion to a rhombic structure ('As), but the energy gain is so small that the effective structure wil
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