S66 noncovalent interactions benchmark re-examined: Composite localized coupled cluster approaches

Emmanouil Semidalas, Golokesh Santra, Nisha Mehta, Jan M.L. Martin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The S66 benchmark dataset for noncovalent interactions (NCIs) is studied through localized coupled-cluster methods and general LNO-CCSD(T)-based composite schemes. Very small root-mean-square deviations (≤ 0.05 kcal/mol) for the low-cost composite approaches from the SILVER reference interaction energies of S66 indicate that one can safely avoid carrying out the largest basis set calculations with veryVeryTight thresholds; instead, additivity corrections in smaller basis sets can be applied. Interestingly, the counterpoise corrections do not have an appreciable effect on the composite schemes. These findings may prove useful for intermolecular and intramolecular NCIs of larger systems.

Original languageEnglish
Title of host publicationInternational Conference of Computational Methods in Sciences and Engineering, ICCMSE 2021
EditorsTheodore Simos, Charalambos Tsitouras, Zacharoula Kalogiratou, Theodore Monovasilis
PublisherAmerican Institute of Physics
ISBN (Electronic)9780735442474
DOIs
StatePublished - 23 Nov 2022
EventInternational Conference of Computational Methods in Sciences and Engineering 2021, ICCMSE 2021 - Heraklion, Greece
Duration: 4 Sep 20217 Sep 2021

Publication series

NameAIP Conference Proceedings
Volume2611
ISSN (Print)0094-243X

Conference

ConferenceInternational Conference of Computational Methods in Sciences and Engineering 2021, ICCMSE 2021
Country/TerritoryGreece
CityHeraklion
Period4/09/217/09/21

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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