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Three‐dimensional numerical integration for electronic structure calculations

Boerrigter, P. M., Te Velde, G., Baerends, J. E.·1988·International Journal of Quantum Chemistry

Abstract

Two three‐dimensional numerical schemes are presented for molecular integrands such as matrix alements of one‐electron operators occuring in the Fock operator and expectation values of one‐electron operators describing molecular properties. The schemes are based on a judicious partitioning of space so that product‐Gauss integration rules can be used in each region. Convergence with the number of integration points is such that very high accuracy (8–10 digits) may be obtained with obtained with a modest number of points. The use of point group symmetry to reduce the required number of points is discussed. Examples are given for overlap, nuclear potential, and electric field gradient integrals.

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Metadata

Authors
Boerrigter, P. M., Te Velde, G., & Baerends, J. E.
Venue
International Journal of Quantum Chemistry
Publisher
Wiley
Published
1988-02
Volume
33
Issue
2
Pages
87-113
ISSN
  • 0020-7608 (ISSN-L)
  • 1097-461X
OpenAlex
W2123195204
Cited by
757
References
0
FWCI
5.39
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Three‐dimensional numerical integration for electronic structure calculations. https://app.cochat.ai/papers/10.1002/qua.560330204
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Boerrigter, P. M., Te Velde, G., & Baerends, J. E. (1988). Three‐dimensional numerical integration for electronic structure calculations. International Journal of Quantum Chemistry. https://doi.org/10.1002/qua.560330204

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