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基于具有周期性边界条件的投影增强波密度的赫希菲尔德原子精修。

Hirshfeld atom refinement based on projector augmented wave densities with periodic boundary conditions.

作者信息

Ruth Paul Niklas, Herbst-Irmer Regine, Stalke Dietmar

机构信息

Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, Göttingen, Lower Saxony 37077, Germany.

出版信息

IUCrJ. 2022 Feb 26;9(Pt 2):286-297. doi: 10.1107/S2052252522001385. eCollection 2022 Mar 1.

DOI:10.1107/S2052252522001385
PMID:35371508
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8895013/
Abstract

Hirshfeld atom refinement (HAR) is an X-ray diffraction refinement method that, in numerous publications, has been shown to give H-atom bond lengths in close agreement with neutron diffraction derived values. Presented here is a first evaluation of an approach using densities derived from projector augmented wave (PAW) densities with three-dimensional periodic boundary conditions for HAR. The results show an improvement over refinements that neglect the crystal environment or treat it classically, while being on a par with non-periodic approximations for treating the solid-state environment quantum mechanically. A suite of functionals were evaluated for this purpose, showing that the SCAN and revSCAN functionals are most suited to these types of calculation.

摘要

赫希菲尔德原子精修(HAR)是一种X射线衍射精修方法,在众多出版物中已表明,该方法得出的氢原子键长与中子衍射得出的值非常接近。本文首次评估了一种利用投影增强波(PAW)密度在三维周期性边界条件下进行HAR的方法。结果表明,与忽略晶体环境或采用经典处理方法的精修相比,该方法有所改进,同时在量子力学处理固态环境方面与非周期性近似相当。为此评估了一系列泛函,结果表明SCAN和revSCAN泛函最适合这类计算。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/8d1f6677d3cd/m-09-00286-fig10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/9643b99accae/m-09-00286-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/48e80fb26e91/m-09-00286-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/e665e920f409/m-09-00286-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/4deb45844831/m-09-00286-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/9e5e886b4268/m-09-00286-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/62b97ab0e738/m-09-00286-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/e905d9b3ccb7/m-09-00286-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/509d4446f7fd/m-09-00286-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/ca7bb6910086/m-09-00286-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/8d1f6677d3cd/m-09-00286-fig10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/9643b99accae/m-09-00286-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/48e80fb26e91/m-09-00286-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/e665e920f409/m-09-00286-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/4deb45844831/m-09-00286-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/9e5e886b4268/m-09-00286-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/62b97ab0e738/m-09-00286-fig6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/e905d9b3ccb7/m-09-00286-fig7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/509d4446f7fd/m-09-00286-fig8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/ca7bb6910086/m-09-00286-fig9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f94/8895013/8d1f6677d3cd/m-09-00286-fig10.jpg

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