具有广义价键波函数的时变多构型短程密度泛函理论。

IF 2.8 2区 化学 Q3 CHEMISTRY, PHYSICAL
Michał Hapka, Hans Jørgen Aa Jensen
{"title":"具有广义价键波函数的时变多构型短程密度泛函理论。","authors":"Michał Hapka, Hans Jørgen Aa Jensen","doi":"10.1021/acs.jpca.5c04699","DOIUrl":null,"url":null,"abstract":"<p><p>We present a theory and an efficient implementation of TD-GVB-srDFT, a time-dependent multiconfigurational range-separated density functional theory based on generalized valence bond perfect-pairing (GVB-PP) wave functions. In GVB-srDFT, dynamic correlation effects are incorporated via range-separation of the Coulomb potential, using tailored Kohn-Sham functionals of the density. The present implementation builds on our earlier work on TD-GVB [Hapka et al. <i>J. Chem. Phys.</i> <b>2022</b>, <i>156</i>, 174102], which employs direct Hessian techniques for both wave function optimization and linear response. We benchmark the performance of TD-GVB-srDFT for singlet and triplet excitation energies, as well as indirect spin-spin coupling constants (SSCCs). Compared to the underlying GVB-PP model, the method significantly improves excitation energies and achieves accuracy comparable to the complete active space variant, CAS-srDFT, with mean absolute deviations of 0.2 eV. The use of the generalized Tamm-Dancoff approximation (gTDA) is mandatory for reliable treatment of triplet excitations. For organic molecules, SSCCs computed with GVB-srDFT closely match those from CAS-srDFT and HF-srDFT results, whereas pure GVB-PP performs markedly worse than CASSCF for all coupling terms. Both GVB-srDFT and CAS-srDFT accurately reproduce fluorine-metal couplings in transition metal complexes, provided that gTDA is applied to singlet contributions.</p>","PeriodicalId":59,"journal":{"name":"The Journal of Physical Chemistry A","volume":" ","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Time-Dependent Multiconfigurational Short-Range Density Functional Theory with Generalized Valence Bond Wave Functions.\",\"authors\":\"Michał Hapka, Hans Jørgen Aa Jensen\",\"doi\":\"10.1021/acs.jpca.5c04699\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>We present a theory and an efficient implementation of TD-GVB-srDFT, a time-dependent multiconfigurational range-separated density functional theory based on generalized valence bond perfect-pairing (GVB-PP) wave functions. In GVB-srDFT, dynamic correlation effects are incorporated via range-separation of the Coulomb potential, using tailored Kohn-Sham functionals of the density. The present implementation builds on our earlier work on TD-GVB [Hapka et al. <i>J. Chem. Phys.</i> <b>2022</b>, <i>156</i>, 174102], which employs direct Hessian techniques for both wave function optimization and linear response. We benchmark the performance of TD-GVB-srDFT for singlet and triplet excitation energies, as well as indirect spin-spin coupling constants (SSCCs). Compared to the underlying GVB-PP model, the method significantly improves excitation energies and achieves accuracy comparable to the complete active space variant, CAS-srDFT, with mean absolute deviations of 0.2 eV. The use of the generalized Tamm-Dancoff approximation (gTDA) is mandatory for reliable treatment of triplet excitations. For organic molecules, SSCCs computed with GVB-srDFT closely match those from CAS-srDFT and HF-srDFT results, whereas pure GVB-PP performs markedly worse than CASSCF for all coupling terms. Both GVB-srDFT and CAS-srDFT accurately reproduce fluorine-metal couplings in transition metal complexes, provided that gTDA is applied to singlet contributions.</p>\",\"PeriodicalId\":59,\"journal\":{\"name\":\"The Journal of Physical Chemistry A\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-09-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Journal of Physical Chemistry A\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://doi.org/10.1021/acs.jpca.5c04699\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Physical Chemistry A","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1021/acs.jpca.5c04699","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

摘要

本文提出了一种基于广义价键完美配对(GVB-PP)波函数的时变多构型距离分离密度泛函理论TD-GVB-srDFT的理论和有效实现。在gvp - srdft中,动态相关效应通过库仑势的距离分离结合,使用定制的密度Kohn-Sham泛函。目前的实现建立在我们早期对TD-GVB [Hapka等人]的研究基础之上。j .化学。物理学报,2022,156,174102],采用直接Hessian技术进行波函数优化和线性响应。我们对TD-GVB-srDFT的单线态和三重态激发能以及间接自旋-自旋耦合常数(SSCCs)进行了基准测试。与底层的GVB-PP模型相比,该方法显著提高了激发能,精度可与完整的主动空间变量CAS-srDFT相比较,平均绝对偏差为0.2 eV。使用广义tam - dancoff近似(gTDA)对于可靠地处理三重态激励是强制性的。对于有机分子,用GVB-srDFT计算的SSCCs与CAS-srDFT和HF-srDFT的结果非常接近,而纯GVB-PP在所有耦合项上的表现明显不如CASSCF。GVB-srDFT和CAS-srDFT都能准确再现过渡金属配合物中的氟-金属耦合,前提是gTDA适用于单线态贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Time-Dependent Multiconfigurational Short-Range Density Functional Theory with Generalized Valence Bond Wave Functions.

We present a theory and an efficient implementation of TD-GVB-srDFT, a time-dependent multiconfigurational range-separated density functional theory based on generalized valence bond perfect-pairing (GVB-PP) wave functions. In GVB-srDFT, dynamic correlation effects are incorporated via range-separation of the Coulomb potential, using tailored Kohn-Sham functionals of the density. The present implementation builds on our earlier work on TD-GVB [Hapka et al. J. Chem. Phys. 2022, 156, 174102], which employs direct Hessian techniques for both wave function optimization and linear response. We benchmark the performance of TD-GVB-srDFT for singlet and triplet excitation energies, as well as indirect spin-spin coupling constants (SSCCs). Compared to the underlying GVB-PP model, the method significantly improves excitation energies and achieves accuracy comparable to the complete active space variant, CAS-srDFT, with mean absolute deviations of 0.2 eV. The use of the generalized Tamm-Dancoff approximation (gTDA) is mandatory for reliable treatment of triplet excitations. For organic molecules, SSCCs computed with GVB-srDFT closely match those from CAS-srDFT and HF-srDFT results, whereas pure GVB-PP performs markedly worse than CASSCF for all coupling terms. Both GVB-srDFT and CAS-srDFT accurately reproduce fluorine-metal couplings in transition metal complexes, provided that gTDA is applied to singlet contributions.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
The Journal of Physical Chemistry A
The Journal of Physical Chemistry A 化学-物理:原子、分子和化学物理
CiteScore
5.20
自引率
10.30%
发文量
922
审稿时长
1.3 months
期刊介绍: The Journal of Physical Chemistry A is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信