## Abstract The theory for treating exchange interactions between atoms or molecules as a perturbation, which was first propoed by Jansen, is extended to general cases by the use of the group algebraic technique and a nonorthogonal basis set. As a result, a new expresion for the perturbation ket an
On Jansen's perturbation theory for exchange interactions
β Scribed by W.Byers Brown
- Book ID
- 107731239
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 328 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## A perlurbnlion theory for intcrmolccular interactions is dcvcIc+! with wave functions of arbitrary symmetry. Firsl-nnd second-order expressions are lvritten out. For the sake of simplicity in practical calculntions. Lhc Unsiild npproximntion is introduced in the second-order cncrgy. ## i. INT
The mathematical problems associated with the development of a satisfactory perturbation theory for exchange forces were discussed in a previous paper, Part I. Different treatments give different results for the second order energy. A new formalism called HAV is proposed. Also, the derivation of the