On the spectroscopic analyses of (E)-3-(dicyclopropyl methylene)-dihydro-4-[1-(2,5 dimethylfuran-3-yl) ethylidene]furan-2,5-dione

被引:30
作者
Ibrahim, M. [1 ]
El-Barbary, A. A. [2 ]
El-Nahass, M. M. [2 ]
Kamel, M. A. [2 ]
El-Mansy, M. A. M. [2 ]
Asiri, A. M. [3 ,4 ]
机构
[1] Natl Res Ctr, Dept Spect, Cairo, Egypt
[2] Ain Shams Univ, Fac Educ, Dept Phys, Cairo, Egypt
[3] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah, Saudi Arabia
[4] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, Jeddah 21413, Saudi Arabia
关键词
DCPF; FT-IR; DFT; Vibrational analysis; HOMO-LUMO energies; FULGIDES; ENERGY;
D O I
10.1016/j.saa.2011.11.039
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
In this work, a combined experimental and theoretical study on molecular structure and vibrational frequencies of (E)-3-(dicyclopropyl methylene)-dihydro-4-[1-(2,5 dimethylfuran-3-yl) ethylidene] furan-2,5-dione [DCPF] were reported. The FT-IR spectra of DCPF isomers are recorded in the solid phase. The equilibrium geometries, harmonic vibrational frequencies, thermo-chemical parameters, total dipole moment and HOMO-LUMO energies are calculated by density functional theory DFT/B3LYP utilizing 6-311G(d,p) basis set. Results showed that scaled frequencies are in good agreement with experimental values. The HOMOs and the LUMOs energies of DCPF isomers were 3.8 and 2.7 eV for E and C isomers respectively. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:202 / 208
页数:7
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