Third-Order Incremental Dual-Basis Set Zero-Buffer Approach: An Accurate and Efficient Way To Obtain CCSD and CCSD(T) Energies.
Third-Order Incremental Dual-Basis Set Zero-Buffer Approach: An Accurate and Efficient Way To Obtain CCSD and CCSD(T) Energies.
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三阶增量双基集零缓冲方法:一种准确有效的获取 CCSD 和 CCSD(T) 能量的方法
DOI:
10.1021/ct400284d
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发表时间:
2013
影响因子:
5.5
通讯作者:
M. Dolg
中科院分区:
文献类型:
--
作者:
M. Dolg
An efficient way to obtain accurate CCSD and CCSD(T) energies for large systems, i.e., the third-order incremental dual-basis set zero-buffer approach (inc3-db-B0), has been developed and tested. This approach combines the powerful incremental scheme with the dual-basis set method, and along with the new proposedK-means clustering (KM) method and zero-buffer (B0) approximation, can obtain very accurate absolute and relative energies efficiently. We tested the approach for 10 systems of different chemical nature, i.e., intermolecular interactions including hydrogen bonding, dispersion interaction, and halogen bonding; an intramolecular rearrangement reaction; aliphatic and conjugated hydrocarbon chains; three compact covalent molecules; and a water cluster. The results show that the errors for relative energies are <1.94 kJ/mol (or 0.46 kcal/mol), for absolute energies of <0.0026 hartree. By parallelization, our approach can be applied to molecules of more than 30 atoms and more than 100 correlated electrons with high-quality basis set such as cc-pVDZ or cc-pVTZ, saving computational cost by a factor of more than 10–20, compared to traditional implementation. The physical reasons of the success of the inc3-db-B0 approach are also analyzed.
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DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
J. Málek;S. Flach;K. Kladko
通讯作者:
K. Kladko
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
S. Havriliak;H. F. King
通讯作者:
H. F. King
DOI:
10.1021/jp072256y
发表时间:
2007
期刊:
The journal of physical chemistry. A
影响因子:
--
作者:
J. Friedrich;M. Hanrath;M. Dolg
通讯作者:
M. Dolg
影响因子:
4.4
作者:
Hansen, Andreas;Liakos, Dimitrios G.;Neese, Frank
通讯作者:
Neese, Frank
影响因子:
4.4
作者:
Fast, PL;Sánchez, ML;Truhlar, DG
通讯作者:
Truhlar, DG