School of Chemistry and Molecular Engineering, Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, 200062 Shanghai, China.
State Key Laboratory of Precision Spectroscopy, East China Normal University, 200062 Shanghai, China.
Proc Natl Acad Sci U S A. 2018 Oct 9;115(41):10257-10262. doi: 10.1073/pnas.1810421115. Epub 2018 Sep 20.
We present a hybrid metageneralized-gradient-approximation functional, revM06, which is based on adding Hartree-Fock exchange to the revM06-L functional form. Compared with the original M06 suite of density functionals, the resulting revM06 functional has significantly improved across-the-board accuracy for both main-group and transition-metal chemistry. The revM06 functional improves on the M06-2X functional for main-group and transition-metal bond energies, atomic excitation energies, isomerization energies of large molecules, molecular structures, and both weakly and strongly correlated atomic and molecular data, and it shows a clear improvement over M06 and M06-2X for noncovalent interactions, including smoother potential curves for rare-gas dimers. The revM06 functional also predicts more accurate results than M06 and M06-2X for most of the outside-the-training-set test sets examined in this study. Therefore, the revM06 functional is well-suited for a broad range of chemical applications for both main-group and transition-metal elements.
我们提出了一种混合泛函,即 revM06,它基于在 revM06-L 泛函形式中添加 Hartree-Fock 交换。与原始的 M06 密度泛函套件相比,所得的 revM06 泛函对主族和过渡金属化学具有全面显著提高的准确性。revM06 泛函改进了 M06-2X 泛函在主族和过渡金属键能、原子激发能、大分子的异构化能、分子结构、弱和强相关的原子和分子数据方面的性能,并且在非共价相互作用方面表现出明显优于 M06 和 M06-2X 的性能,包括稀有气体二聚体的更平滑的势能曲线。在本研究中检查的大多数训练集外测试集中,revM06 泛函也预测出比 M06 和 M06-2X 更准确的结果。因此,revM06 泛函非常适合主族和过渡金属元素的广泛化学应用。