The open-shell coupled-cluster method and the diagrams needed for its implementation are described. The method is applied to the electron ainities of Li and Na, which are calculated in two ways: as the ionization potential of the anions or as the energy of adding the second electron to the cations.
Li2 ground and excited states by the open-shell coupled-cluster method
β Scribed by Uzi Kaldor
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 518 KB
- Volume
- 140
- Category
- Article
- ISSN
- 0301-0104
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π SIMILAR VOLUMES
The equationof-motion coupled-cluster method (EOM-CCSD) and its quadratic CI (EOM-QCISD) variant for excited states have been implemented in the ACES II program system. Results for open-and closed-shell reference states are reported for Be, N2, CO, 02, and 0,. The results show that EOM-CCSD and EOM-
## Abstract The theory for the analytical energy gradients of excited electronic state described by equation of motion coupedβcluster method (EOMβCC) (Stanton, J Chem Phys, 1993, 99, 8840) has been generalized to molecules in solution within the polarizable continuum model (PCM) framework (MiertuΕ‘