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-
An application of the equation-of-motion coupled cluster method to the excited states of formaldehyde, acetaldehyde, and acetone
β Scribed by Steven R. Gwaltney; Rodney J. Bartlett
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 628 KB
- Volume
- 241
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
β¦ Synopsis
The equation-of-motion coupled cluster method is used to describe the electronic excitation spectra of the model carbonyl compounds, formaldehyde, acetaldehyde, and acetone. For the first few valence states and for the n = 3 Rydberg states, the average error for the vertical excitation energies is 0.08 eV.
π SIMILAR VOLUMES
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The potential energy surface for the dissociation of methane CH .-rCH; +H' is investigated using many-body perturbation theory (MBPT) and coupled-cluster (CC) methods including full CCSDT. Full fourth-order MBPT(4) based upon an unrestricted HartreeeFock reference function shows the characteristic r