新的交换相关泛函在再现丙烯酸丁酯和甲基丙烯酸丁酯分子红外光谱中的准确性和适用性

O. Belaidi, T. Bouchaour, U. Maschke
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引用次数: 3

摘要

通过7个官能团对丙烯酸丁酯和甲基丙烯酸丁酯进行了优化。所有发现的结构都是局部极小值,属于Cs对称。计算出的频率根据其平方误差进行缩放和排序。B972和B98的标度因子不能再现红外光谱。G96LYP、OLYP和HCTH泛函的计算和缩放频率与实验光谱具有可接受的相关性。O3LYP/6-31G(f,p)和O3LYP/6-311的比例因子
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Accuracy and Applicability of the New Exchange Correlation Functionals for Reproduction of the Infrared Spectra of Butyl Acrylate and Butyl Methacrylate Molecules
The butyl acrylate and butyl methacrylate were optimized by seven functionals. All the structures found are local minima and belong to the Cs symmetry. The calculated frequencies are scaled and ranked according to their square errors. The scaling factors of the B972 and B98 functionals fail to reproduce the infrared spectra. The calculated and scaled frequencies with G96LYP, OLYP, and HCTH functionals give acceptable correlations with the experimental spectra. The scaling factors for O3LYP/6-31G(f,p) and O3LYP/6-311
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