It is shown that the configuration interaction calculations of Walch and Laskowski for the ground 2E' state of Cus are consistent with truncating the potential energy at second order in the distance from the D,, conical intersection, which leads to a diabatic representation (the "quadratic coupling
The Jahn—Teller potential energy surface of H+4
✍ Scribed by Pavel Jungwirth; Petr Čársky; Thomas Bally
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 545 KB
- Volume
- 195
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
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 obtained by following the Jahn-Teller active modes. The results are compared with previous studies and the reliability of the single reference CI-SD approach to this problem is discussed.
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