Displacement parameters from density-functional theory and their validation in the experimental charge density of tartaric acid
Displacement parameters from density-functional theory and their validation in the experimental charge density of tartaric acid
复制标题
密度泛函理论的位移参数及其在酒石酸实验电荷密度中的验证
DOI:
10.1039/d0ce01425g
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发表时间:
2021
期刊:
影响因子:
3.1
通讯作者:
R. Dronskowski
中科院分区:
文献类型:
--
作者:
D. Mroz;R. Wang;U. Englert;R. Dronskowski
Based on an X-ray diffraction experiment at high resolution and a multipole refinement, the experimental electron density for R,R-tartaric acid (1) was determined. The consistent description of the different hydrogen bonds in 1 confirmed the quality of the diffraction data. The multipole-derived anisotropic displacement parameters (ADPs) for the non-hydrogen atoms were used as benchmarks for ADPs calculated from density-functional theory. For this theoretical approach, the structure was minimized with a dispersion-corrected exchange-correlation functional, and the phonon calculations were performed according to the harmonic and also the computationally more demanding quasiharmonic approximation. ADPs from experiment and quasiharmonic theory match very well with respect to amplitudes and directions of displacement. Numerical and graphical tests for the agreement between experimental and calculated ADPs for all non-hydrogen atoms indicate only small discrepancies. ADPs for hydrogen atoms were validated indirectly by their modest but positive effect on the quality indicators of the diffraction experiment.
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影响因子:
4
作者:
Volker L. Deringer;Ai Wang;Janine George;R. Dronskowski;U. Englert
通讯作者:
U. Englert
影响因子:
3.1
作者:
Janine George;Ai Wang;Volker L. Deringer;Ruimin Wang;R. Dronskowski;U. Englert
通讯作者:
Janine George;Ai Wang;Volker L. Deringer;Ruimin Wang;R. Dronskowski;U. Englert
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
中村賀美;竹内孝江
通讯作者:
竹内孝江
DOI:
10.1107/s0108768111043138
发表时间:
2011
期刊:
Acta crystallographica. Section B, Structural science
影响因子:
--
作者:
Mihaela;Ruimin Wang;M. Meven;U. Englert
通讯作者:
U. Englert
DOI:
10.1107/s0108768106020787
发表时间:
2006
期刊:
Acta crystallographica. Section B, Structural science
影响因子:
--
作者:
A. Whitten;M. Spackman
通讯作者:
M. Spackman