Accurate bond dissociation enthalpies by using doubly hybrid XYG3 functional

Accurate bond dissociation enthalpies by using doubly hybrid XYG3 functional
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DOI:
10.1002/jcc.21764
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发表时间:
2011-03
影响因子:
3
通讯作者:
Igor Ying Zhang;Jianming Wu;Yi Luo;Xin Xu
Igor Ying Zhang;Jianming Wu;Yi Luo;Xin Xu
中科院分区:
化学3区
文献类型:
--
作者:
Igor Ying Zhang;Jianming Wu;Yi Luo;Xin Xu

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在这项工作中,我们检查的性能XYG 3,一个新开发的双杂化密度泛函(张,徐,和戈达德III,美国国家科学院院刊2009年,106,4963),计算共价键解离焓(BDE)。我们使用5个原子,32个分子自由基和116个闭壳分子来建立142个键解离反应。对于总共148个生成热和142个溴化二苯醚,XYG 3的平均绝对偏差分别为1.45和1.87千卡/摩尔。与其他一些泛函相比,HOF的MAD分别为2.31(M06 - 2X),2.98(B2PLYP-D),3.04(BMK),3.96(B3LYP),4.47(B2PLYP),5.42 BDEs的相应误差分别为2.06(M06 - 2X)、2.25(BMK)、2.51(B2 GP-PLYP)、6.46(PBE 0)和29.93 kcal/mol(B3 P86),(B2PLYP-D)、2.89(B2GP-PLYP)、3.30(B3P86)、3.44(B2PLYP)、3.87(PBE 0)和6.14 kcal/mol(B3LYP)。© 2011 Wiley Periodicals,Inc. J Comput Chem,2011年
In this work, we examine the performance of XYG3, a newly developed doubly hybrid density functional (Zhang, Xu, and Goddard III, Proc Natl Acad Sci USA 2009, 106, 4963), to calculate covalent bond dissociation enthalpy (BDE). We use 5 atoms, 32 molecular radicals, and 116 closed‐shell molecules to set up 142 bond dissociation reactions. For the total of 148 heats of formation (HOFs) and 142 BDEs, XYG3 leads to mean absolute deviations (MADs) of 1.45 and 1.87 kcal/mol, respectively. In comparison with some other functionals, MADs for HOFs are 2.31 (M06‐2X), 2.98 (B2PLYP‐D), 3.04 (BMK), 3.96 (B3LYP), 4.47 (B2PLYP), 5.42 (B2GP‐PLYP), 6.46 (PBE0), and 29.93 kcal/mol (B3P86), and the corresponding errors for BDEs are 2.06 (M06‐2X), 2.25 (BMK), 2.51 (B2PLYP‐D), 2.89 (B2GP‐PLYP), 3.30 (B3P86), 3.44 (B2PLYP), 3.87 (PBE0), and 6.14 kcal/mol (B3LYP). © 2011 Wiley Periodicals, Inc. J Comput Chem, 2011