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A theoretical study on 1-(thiophen-2-yl-methyl)-2-(thiophen-2-yl)-1H-benzimidazole

机译:1-(噻吩-2-基-甲基)-2-(噻吩-2-基)-1H-苯并咪唑的理论研究

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摘要

The molecular geometry and vibrational frequencies of 1-(thiophen-2-yl-methyl)-2-(thiophen-2-yl)-1H-benzimidazole (C16H12N2S2) in the ground state has been calculated using the Hartree-Fock (HF) and density functional method (B3LYP) with 6-31G(d) basis set. The optimized geometric bond lengths and bond angles obtained by using HF and DFT (B3LYP) show the best agreement with the experimental data. Comparison of the observed fundamental vibrational frequencies of 1-(thiophen-2-yl-methyl)-2-(thiophen-2-yl)-1H-benzimidazole (C16H12N2S2) and calculated results by density functional B3LYP and Hartree-Fock methods indicate that B3LYP is superior to the scaled Hartree-Fock approach for molecular vibrational problems. (C) 2006 Elsevier B.V. All rights reserved.
机译:使用Hartree-Fock(HF)计算了基态的1-(噻吩-2-基-甲基)-2-(噻吩-2-基)-1H-苯并咪唑(C16H12N2S2)的分子几何结构和振动频率和具有6-31G(d)基集的密度泛函方法(B3LYP)。通过使用HF和DFT(B3LYP)获得的优化的几何键长和键角显示出与实验数据的最佳一致性。比较观察到的1-(噻吩-2-基-甲基)-2-(噻吩-2-基)-1H-苯并咪唑(C16H12N2S2)的基本振动频率和密度泛函B3LYP和Hartree-Fock方法的计算结果表明:对于分子振动问题,B3LYP优于按比例缩放的Hartree-Fock方法。 (C)2006 Elsevier B.V.保留所有权利。

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