Double Hybrids and Noncovalent Interactions: How Far Can We Go?
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Título: | Double Hybrids and Noncovalent Interactions: How Far Can We Go? |
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Autor/es: | Brémond, Éric | Li, Hanwei | Sancho-Garcia, Juan-Carlos | Adamo, Carlo |
Grupo/s de investigación o GITE: | Química Cuántica |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física |
Palabras clave: | Double hybrids | Noncovalent interactions | PBE-QIDH/DH-SVPD |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 19-abr-2022 |
Editor: | American Chemical Society |
Cita bibliográfica: | The Journal of Physical Chemistry A. 2022, 126(16): 2590-2599. https://doi.org/10.1021/acs.jpca.2c01193 |
Resumen: | The accurate evaluation of weak noncovalent interactions in large, that is those containing up to thousand atoms, molecular systems represents a difficult challenge for any quantum chemical method. Indeed, some approximations are often introduced to render affordable these calculations. Here, we consider the PBE-QIDH/DH-SVPD protocol, combining a nonempirical double hybrid functional (PBE-QIDH) with a small basis set (DH-SVPD) tailored for noncovalent interactions with a double aim: (i) explore the robustness and accuracy of this protocol with respect to other Density Functional Approximations; (ii) illustrate how its performances are affected by the computational parameters underlying the calculation of the exact exchange and the Coulomb contribution, as well as the perturbative term. To this end, we consider three data sets, namely S66, L7, and CiM13, incorporating molecules of increasing size. On the bright side, our results suggest that the PBE-QIDH/DH-SVPD protocol is particularly accurate for large systems such as those contained in the CiM13 set (up to more than 1000 atoms and 14 000 basis functions), for which the DLPNO approximation leads to a significant speed-up for the evaluation of the perturbative correlation term. However, our analysis also points out the limit of this statistical exercise, when the quality of the reference data cannot be easily assessed, due to the size of the molecular complexes involved, and when the number of molecules is limited. |
Patrocinador/es: | E.B. thanks ANR (Agence Nationale de la Recherche) and CGI (Commissariat à l’Investissement d’Avenir) for their financial support to this work through Labex SEAM (Science and Engineering for Advanced Materials and devices), Grant Nos. ANR-10-LABX-096 and ANR-18-IDEX-0001. H.L. acknowledges the financial support from the China Scholarship Council (Grant No. 201908310062). |
URI: | http://hdl.handle.net/10045/123198 |
ISSN: | 1089-5639 (Print) | 1520-5215 (Online) |
DOI: | 10.1021/acs.jpca.2c01193 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2022 American Chemical Society |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1021/acs.jpca.2c01193 |
Aparece en las colecciones: | INV - QC - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Bremond_etal_2022_JPhysChemA_final.pdf | Versión final (acceso restringido) | 3,34 MB | Adobe PDF | Abrir Solicitar una copia |
Bremond_etal_2022_JPhysChemA_preprint.pdf | Preprint (acceso abierto) | 1,99 MB | Adobe PDF | Abrir Vista previa |
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