A strategy is presented for the calculation of two-center overlap integrals over Slater-type orbitals. Displaced orbitals are expanded in spherical harmonics with Lowdin โฃ-functions รคs coefficients. The exponentials in the โฃ-functions are expanded, leading to representation in terms of stored E and
Recursion formulae for calculation of overlap integrals
โ Scribed by N. C. Datta; B. Sen
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 314 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0192-8651
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โฆ Synopsis
Multi-( Slater-type orbitals are frequently used in molecular orbital calculations. Master formulae and numerical tables are available in literature for overlap integrals between s, p , and d atomic orbitals up to principal quantum number (n) = 3 and for some other selected quantum numbers. However, no master formula or numerical table is available for quantum numbers n = 5 and above and involving f orbitals. In this article recursion formulae have been presented for the calculation of the overlap integral between any two s, p , d , and f atomic orbitals formed by a linear combination of Slater-type orbitals. These formulae, when expanded, would give rise to all the master formulae reported in the literature as well as formulae hitherto unreported.
๐ SIMILAR VOLUMES
A new translation method for Slater-type orbitals STOs is proposed involving exact translation of the regular solid harmonic part of the orbital followed by the series expansion of the residual spherical part in powers of the radial variable. The method is positively tested in the case of the overla
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