The dipole moment of carbon monoxide
J. Chem. Phys. 94, 6660 (1991); doi:10.1063/1.460293
Issue Date: 15 May 1991
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The dipole moment of CO has been calculated with many-body perturbation theory (MBPT) and coupled cluster (CC) methods using basis sets which have been optimized at the MBPT-2 level. It is demonstrated that triple excitations as well as g-type functions in the basis set are crucial to obtain satisfactory agreement with experiment. The most reliable prediction (0.125 D) is obtained at the CCSD(T) (coupled cluster including all single, double, and connected triple excitations, perturbatively) level of theory using a 10s9p4d2f1g basis set (160 basis functions). This result is in excellent agreement with the experimental value of 0.122 D.
The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
| History: | Received 26 November 1990; accepted 28 January 1991 |
| Permalink: |
http://link.aip.org/link/?JCPSA6/94/6660/1 |
KEYWORDS and PACS
CARBON MONOXIDE,
DIPOLE MOMENTS,
PERTURBATION THEORY,
ELECTRON CORRELATION,
ELECTRONIC STRUCTURE,
MANY&minus,
BODY PROBLEM
- 31.20.Tz
Electronic structure of atoms and molecules: theory Specific calculations and results Electron correlation and CI calculations - 35.20.My
Experimentally derived information on atoms and molecules; instrumentation and techniques Molecules Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility - YEAR: 1990-91
RELATED DATABASES
PUBLICATION DATA
0021-9606 (print)
1089-7690 (online)
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