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Benchmarking lattice energy of a model 1D molecular HF crystal

State-of-the-art benchmark lattice energies of 1D hydrogen fluoride model crystal are presented. Many-body expanded coupled-cluster CCSD(T) extrapolated to the complete basis set, and thermodynamic limit results in - 7.5 ± 0.1 kcal/mol per molecule. One-determinant fixed-node diffusion Monte Carlo (...

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Bibliographic Details
Published in:Theoretical chemistry accounts 2020-05, Vol.139 (5), Article 89
Main Authors: Fanta, Roman, Kolesár, Vladimír, Šimunek, Ján, Dubecký, Matúš
Format: Article
Language:English
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Summary:State-of-the-art benchmark lattice energies of 1D hydrogen fluoride model crystal are presented. Many-body expanded coupled-cluster CCSD(T) extrapolated to the complete basis set, and thermodynamic limit results in - 7.5 ± 0.1 kcal/mol per molecule. One-determinant fixed-node diffusion Monte Carlo ( - 7.5 ± 0.1  kcal/mol) explicitly confirms its ability to produce competitive results in periodic setting.
ISSN:1432-881X
1432-2234
DOI:10.1007/s00214-020-02601-3