## Abstract In the framework of the Heitler‐London method, a method for determining the allowed molecular multiplets is proposed. The method is based on the connection of the total molecular spin with the permutation symmetry of the coordinate wave function and on the isomorphism of the molecular p
Symmetry in the Heitler-London method. I. The connection of the molecular point group with its electron permutation group in the Heitler-London method
✍ Scribed by E. M. Ledovskaya; M. I. Petrashen
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 367 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
Abstract
The connection between the electron coordinates permutation group and the molecular point group is exhibited in the framework of the Heitler‐London method. It is shown that the initial wave function of a molecule in the Heitler‐London method can be written in such a form, that the effect of the point group operations upon this function corresponds to the permutation of the sets of electron coordinates of the ions and the subsequent multiplication of this function by some constants.
📜 SIMILAR VOLUMES
Group theoretic methods are presented for the transformations of integrals and the evaluation of matrix elements encountered in multiconfigurational self-consistent field (MCSCF) and configuration interaction (CI) calculations. The method has the advantages of needing only to deal with a symmetry un