Implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules
We have implemented the nuclear gradient for several range‐separated hybrid density functionals in the general quantum chemistry code ORCA. To benchmark the performance, we have used a recently published set of back‐corrected gas phase rotational constants, which we extended by three molecules. In o...
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crwiley:10.1002/jcc.23649 2024-09-15T18:28:55+00:00 Implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules Risthaus, Tobias Steinmetz, Marc Grimme, Stefan 2014 http://dx.doi.org/10.1002/jcc.23649 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjcc.23649 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jcc.23649 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Computational Chemistry volume 35, issue 20, page 1509-1516 ISSN 0192-8651 1096-987X journal-article 2014 crwiley https://doi.org/10.1002/jcc.23649 2024-07-23T04:09:22Z We have implemented the nuclear gradient for several range‐separated hybrid density functionals in the general quantum chemistry code ORCA. To benchmark the performance, we have used a recently published set of back‐corrected gas phase rotational constants, which we extended by three molecules. In our evaluation, CAM‐B3LYP‐D3 and ωB97X‐D3 show great accuracy, and are surpassed by B2PLYP‐D3 only. Lower‐cost alternatives to quadruple‐ζ basis set‐based calculations, among them a smaller basis set and the use of resolution‐of‐the‐identity approaches, are assessed and shown to yield acceptable deviations. In addition, the Hartree‐Fock‐based back‐correction method is compared to a density functional theory alternative, which largely shows consistency between the two. A new, well‐performing, spin‐component scaled MP2 variant is designed and discussed, as well. © 2014 Wiley Periodicals, Inc. Article in Journal/Newspaper Orca Wiley Online Library Journal of Computational Chemistry 35 20 1509 1516 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
We have implemented the nuclear gradient for several range‐separated hybrid density functionals in the general quantum chemistry code ORCA. To benchmark the performance, we have used a recently published set of back‐corrected gas phase rotational constants, which we extended by three molecules. In our evaluation, CAM‐B3LYP‐D3 and ωB97X‐D3 show great accuracy, and are surpassed by B2PLYP‐D3 only. Lower‐cost alternatives to quadruple‐ζ basis set‐based calculations, among them a smaller basis set and the use of resolution‐of‐the‐identity approaches, are assessed and shown to yield acceptable deviations. In addition, the Hartree‐Fock‐based back‐correction method is compared to a density functional theory alternative, which largely shows consistency between the two. A new, well‐performing, spin‐component scaled MP2 variant is designed and discussed, as well. © 2014 Wiley Periodicals, Inc. |
format |
Article in Journal/Newspaper |
author |
Risthaus, Tobias Steinmetz, Marc Grimme, Stefan |
spellingShingle |
Risthaus, Tobias Steinmetz, Marc Grimme, Stefan Implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules |
author_facet |
Risthaus, Tobias Steinmetz, Marc Grimme, Stefan |
author_sort |
Risthaus, Tobias |
title |
Implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules |
title_short |
Implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules |
title_full |
Implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules |
title_fullStr |
Implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules |
title_full_unstemmed |
Implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules |
title_sort |
implementation of nuclear gradients of range‐separated hybrid density functionals and benchmarking on rotational constants for organic molecules |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1002/jcc.23649 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjcc.23649 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jcc.23649 |
genre |
Orca |
genre_facet |
Orca |
op_source |
Journal of Computational Chemistry volume 35, issue 20, page 1509-1516 ISSN 0192-8651 1096-987X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jcc.23649 |
container_title |
Journal of Computational Chemistry |
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35 |
container_issue |
20 |
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1509 |
op_container_end_page |
1516 |
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1810470345929392128 |