Published December 15, 1971
| public
Journal Article
Open
Applicability of SCF Theory to Some Open-Shell States of CO, N2, and O2
- Creators
- Rose, John B.
- McKoy, Vincent
Chicago
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Abstract
By working with the real functions pix and piy instead of pi+ and pi–, we show how to express the SCF Hamiltonians for the Sigma states of the configurations (piu)3(pig),(piu)3(pig)3, and (1pi)3 (2pi) of diatomic molecules in terms of the Coulomb and exchange operators only. With these results, we have used conventional SCF programs to solve for the wavefunctions of many interesting states of N2, O2, and CO, e.g., the B 3Sigmau– state of O2. For many states, the SCF results are in good agreement with experiment. However, SCF theory runs into serious trouble if electron correlation is important in determining the relative locations of excited states.
Additional Information
©1971 The American Institute of Physics. Received 2 August 1971. We thank Mr. W.J. Hunt for providing the open-shell SCF programs and for his assistance in using them. One of us (J.B.R.) also thanks Mr. Vincent Gutschick for computational assistance. Work supported in part by the National Science Foundation. Arthur Amos Noyes Laboratory of Chemical Physics, Contribution No. 4305.Files
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