## X new method for perfonntig valence-electron calculations is applied for the fii time to n molecular s)-stem. The method contains no adjustable parameters and in the limit of a larse basis set converges on the all-electron frozencore results.
An ab initio method for performing valence-electron-only calculations
โ Scribed by G.G. Balint-Kurti; S.C. Leasure; T.P. Martin
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 758 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
A consistent use of the spectral representation is made to develop an effective Hamiltonian for molecular calculations in which only active electrons are dealt with, keeping other electrons frozen. The effective Hamiltonian is prepared without invoking any parameter fitting and adjusting procedures.
The Cb-. CS-. and C'ln-coefficicnts of the asymptotic expansion of the intcrnction energy in terms of powers of I/R are calculated for the p&s of atoms He-He, Be-Be, big-hip, Ca-Ca. The method involves the direct calculation of the "natural states of the subsystem under the interaction". Three appro