S66x8 noncovalent interactions revisited: new benchmark and performance of composite localized coupled-cluster methods

Author(s)
Santra, Golokesh
Semidalas, Emmanouil
Mehta, Nisha
Karton, Amir
Martin, Jan M L
Publication Date
2022-11-07
Abstract
<p>The S66x8 noncovalent interactions benchmark has been re-evaluated at the "sterling silver" level, using explicitly correlated MP2-F12 near the complete basis set limit, CCSD(F12*)/aug-cc-pVTZ-F12, and a (T) correction from conventional CCSD(T)/sano-V{D,T}Z+ calculations. The revised reference values differ by 0.1 kcal mol<sup>-1</sup> RMS from the original Hobza benchmark and its revision by Brauer et al., but by only 0.04 kcal mol<sup>-1</sup> RMS from the "bronze" level data in Kesharwani <i>et al., Aust. J. Chem.,</i> 2018, <b>71</b>, 238– 248. We then used these to assess the performance of localized-orbital coupled cluster approaches with and without counterpoise corrections, such as PNO-LCCSD(T) as implemented in MOLPRO, DLPNO-CCSD(T<sub>1</sub>) as implemented in ORCA, and LNO-CCSD(T) as implemented in MRCC, for their respective "Normal", "Tight", and "very Tight" settings. We also considered composite approaches combining different basis sets and cutoffs. Furthermore, in order to isolate basis set convergence from domain truncation error, for the aug-cc-pVTZ basis set we compared PNO, DLPNO, and LNO approaches with canonical CCSD(T). We conclude that LNO-CCSD(T) with very tight criteria performs very well for "raw" (CP-uncorrected), but struggles to reproduce counterpoise-corrected numbers even for very very criteria: this means that accurate results can be obtained using either extrapolation from basis sets large enough to quench basis set superposition error (BSSE) such as aug-cc-pV{Q,5}Z, or using a composite scheme such as Tight{T,Q} + 1.11[vvTight(T) Tight(T)]. In contrast, PNO-LCCSD(T) works best with counterpoise, while performance with and without counterpoise is comparable for DLPNO-CCSD(T<sub>1</sub>). Among more economical methods, the highest accuracies are seen for dRPA75- D3BJ, ωB97M-V, ωB97M(2), revDSD-PBEP86-D4, and DFT(SAPT) with a TDEXX or ATDEXX kernel.</p>
Citation
Physical Chemistry Chemical Physics, 24(41), p. 25555-25570
ISSN
1463-9084
1463-9076
Link
Publisher
Royal Society of Chemistry
Rights
Attribution 4.0 International
Title
S66x8 noncovalent interactions revisited: new benchmark and performance of composite localized coupled-cluster methods
Type of document
Journal Article
Entity Type
Publication

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