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Title: Performance of SCAN density functional for a set of ionic liquid ion pairs

Journal Article · · International Journal of Quantum Chemistry
DOI: https://doi.org/10.1002/qua.25582 · OSTI ID:1415505

Abstract Computational chemistry is a powerful tool for the discovery of novel materials. In particular, it is used to simulate ionic liquids in search of electrolytes for electrochemical applications. Herein, the choice of the computational method is not trivial, as it has to be both efficient and accurate. Density functional theory methods with appropriate corrections for the systematic weaknesses can give precision close to that of the post‐Hartree–Fock coupled cluster methods with a fraction of their cost. Thence, we have evaluated the performance of a recently developed nonempirical strongly constrained and appropriately normed (SCAN) density functional on electronic structure calculations of ionic liquid ion pairs. The performance of SCAN and other popular functionals (PBE, M06‐L, B2PLYP) among with Grimme's dispersion correction and Boys–Bernardi basis set superposition error correction was compared to DLPNO‐CCSD(T)/CBS. We show that SCAN reproduces coupled‐cluster results for describing the employed dataset of 48 ion pairs.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0012575
OSTI ID:
1415505
Journal Information:
International Journal of Quantum Chemistry, Journal Name: International Journal of Quantum Chemistry Journal Issue: 13 Vol. 118; ISSN 0020-7608
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United States
Language:
English

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