Correcting π-delocalisation errors in conformational energies using density-corrected DFT, with application to crystal polymorphs
Correcting π-delocalisation errors in conformational energies using density-corrected DFT, with application to crystal polymorphs
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使用密度校正 DFT 校正构象能中的 α 离域误差,并应用于晶体多晶型物
DOI:
10.1080/00268976.2022.2138789
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发表时间:
2023
影响因子:
1.7
通讯作者:
Herbert, John M.
中科院分区:
文献类型:
--
作者:
Rana, Bhaskar;Beran, Gregory J.;Herbert, John M.
We consider several molecules characterised byπ-electron conjugation whose extent changes along a flexible torsional coordinate, and which represent the monomer units of polymorphic molecular crystals. Delocalisation error in density functional theory (DFT) adversely impacts conformational energies in these species, overstabilising the conformation that maximises conjugation length and leading to incorrect relative energies for the corresponding crystal polymorphs. We demonstrate that density-corrected (DC-)DFT, in which a DFT exchange-correlation functional is evaluated using a Hartree–Fock density, significantly reduces these conformational energy errors. When DC-DFT monomer energies are used as a low-cost intramolecular correction to a periodic DFT calculation of the molecular crystal, the resulting relative polymorph energies are within 1 kJ/mol of benchmark results.
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影响因子:
3.7
作者:
Anger, F.;Breuer, T.;Schreiber, F.
通讯作者:
Schreiber, F.
影响因子:
3.1
作者:
Yanan Zhou;Jingkang Wang;Yan Xiao;Ting Wang;Xin Huang
通讯作者:
Xin Huang
DOI:
10.1063/1.2937446
发表时间:
2008
期刊:
The Journal of chemical physics
影响因子:
--
作者:
P. Karamertzanis;G. Day;G. Welch;J. Kendrick;F. Leusen;M. Neumann;S. Price
通讯作者:
S. Price
影响因子:
3.1
作者:
J. Kendrick;Matthew D. Gourlay;M. Neumann;F. Leusen
通讯作者:
F. Leusen
影响因子:
3.6
作者:
Sakamoto, Youichi;Suzuki, Toshiyasu
通讯作者:
Suzuki, Toshiyasu