Modeling halogen bonding with planewave density functional theory Accuracy and challenges

Modeling halogen bonding with planewave density functional theory : Accuracy and challenges

© 2019 Wiley Periodicals, Inc.

Bibliographische Detailangaben
Veröffentlicht in:Journal of computational chemistry. - 1984. - 40(2019), 20 vom: 30. Juli, Seite 1829-1835
1. Verfasser: Ang, Shi Jun (VerfasserIn)
Weitere Verfasser: Ser, Cher Tian, Wong, Ming Wah
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Journal of computational chemistry
Schlagworte:Journal Article CCSD(T) benchmark halogen bonding non-covalent interactions planewave DFT
Beschreibung
Zusammenfassung:© 2019 Wiley Periodicals, Inc.
Inspired by the recent interest of halogen bonding (XB) in the solid state, we detail a comprehensive benchmark study of planewave DFT geometry and interaction energy of lone-pair (LP) type and aromatic (AR) type halogen bonded complexes, using PAW and USPP pseudopotentials. For LP-type XB dimers, PBE-PAW generally agrees with PBE/aug-cc-pVQZ(-pp) geometries but significantly overbinds compared to CCSD(T)/aug-cc-pVQZ(-pp). Grimme's D3 dispersion corrections to PBE-PAW gives better agreement to the MP2/cc-pVTZ(-pp) results for AR-type dimers. For interaction energies, PBE-PAW may overbind or underbind for weaker XBs but clearly overbinds for stronger XBs. D3 dispersion corrections exacerbate the overbinding problem for LP-type complexes but significantly improves agreement for AR-type complexes compared to CCSD(T)/CBS. Finally, for periodic XB crystals, planewave PBE methods slightly underestimate the XB lengths by 0.03 to 0.05 Å. © 2019 Wiley Periodicals, Inc
Beschreibung:Date Revised 23.07.2019
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1096-987X
DOI:10.1002/jcc.25835