Physical and numerical aspects of sodium ion solvation free energies via the cluster-continuum model

Arseniy A Otlyotov, Daniil Itkis, Lada V Yashina, Luigi Cavallo, Yury Minenkov

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Sodium cation solvation Gibbs free energies (ΔGsolv(Na+)) have been obtained in water, dimethylformamide, dimethyl sulfoxide, ethanol, acetone, acetonitrile, and methanol through the “monomer cycle” cluster-continuum approach where a solvent reference state is described by infinitely separated molecules. The following steps are vital for obtaining reliable ΔGsolv(Na+) values: (a) a meticulous conformational search involving dispersion corrected density functional theory (DFT-D) and the continuum solvation model (CSM); (b) gas-phase DFT-D geometry optimization followed by single-point (SP) domain-based local pair natural orbital coupled clusters including single, double, and partly triple excitation (DLPNO-CCSD(T)) calculations in conjunction with the complete basis set extrapolation; (c) advanced statistical thermodynamic treatment of the low harmonic frequencies (
Original languageEnglish (US)
JournalPhysical chemistry chemical physics : PCCP
DOIs
StatePublished - Nov 21 2022

Bibliographical note

KAUST Repository Item: Exported on 2022-12-07
Acknowledgements: We acknowledge the anonymous reviewers of this work for their useful comments and suggestions. This work was financially supported by the Russian Science Foundation (project 22-23-20206). L. C. gratefully acknowledges financial support from the King Abdullah University of Science and Technology (KAUST). For computer time, this research used the resources of the Supercomputing Laboratory at King Abdullah University of Science and Technology (KAUST) in Thuwal, Saudi Arabia and the Joint Supercomputer Center of RAS in Moscow, Russia.

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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