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Cited by 409

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Doubly hybrid density functional for accurate descriptions of nonbond interactions, thermochemistry, and thermochemical kinetics

Open access
Zhang, Ying, Xu, Xin, Goddard, William A.·2009·Proceedings of the National Academy of Sciences

Abstract

We develop and validate a density functional, XYG3, based on the adiabatic connection formalism and the Görling–Levy coupling-constant perturbation expansion to the second order (PT2). XYG3 is a doubly hybrid functional, containing 3 mixing parameters. It has a nonlocal orbital-dependent component in the exchange term (exact exchange) plus information about the unoccupied Kohn–Sham orbitals in the correlation part (PT2 double excitation). XYG3 is remarkably accurate for thermochemistry, reaction barrier heights, and nonbond interactions of main group molecules. In addition, the accuracy remains nearly constant with system size.

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Crossref · 10.1073/pnas.0901093106

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Metadata

Authors
Zhang, Y., Xu, X., & Goddard, W. A.
Venue
Proceedings of the National Academy of Sciences
Published
2009-03-31
Volume
106
Issue
13
Pages
4963-4968
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2127887268
Cited by
409
References
4
FWCI
12.64
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Doubly hybrid density functional for accurate descriptions of nonbond interactions, thermochemistry, and thermochemical kinetics. https://app.cochat.ai/papers/10.1073/pnas.0901093106
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Zhang, Y., Xu, X., & Goddard, W. A. (2009). Doubly hybrid density functional for accurate descriptions of nonbond interactions, thermochemistry, and thermochemical kinetics. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0901093106

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.