Two charge-conserving integral approximations are presented, one for nqlecting and another for approximating the less important integrals that arise in quantum chemicsl calculations on molecular systems. Results are presented for test calculations on ethylene and glycine.
A charge conserving approximation method for quantum chemical calculations
β Scribed by Fu-Jiang Ding; Liang-Fu Zhang; Guang-Nian Li
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 374 KB
- Volume
- 150
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
A charge conserving approximation method for ab initio calculations is presented. We replace STOs by STO-2G functions for evaluating three-and four-center integrals and keep the STO-2G two-orbital charge distributions having the same total charge as the STOs. Results are presented for test calculations on six molecules,
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