Abstract
Two 2-pyrazoline derivatives of 1-phenyl-3-(4-chlorophenyl)-5-(2-chlorophenyl)-2-pyrazoline (1) and 1-phenyl-3-(4-methylphenyl)-5-(2-chlorophenyl)-2-pyrazoline (2) have been synthesized and characterized by elemental analysis, IR, UV–Vis, and fluorescence spectra. The crystal structure of 2 has been determined by X-ray single crystal diffraction. For the two compounds, density functional theory (DFT) calculations of the structures and natural population atomic charge analysis have been performed at B3LYP/6-311G** level of theory. By using TD-DFT method, electron spectra of 1 and 2 have been predicted, which are in good agreement with the experimental ones. Comparative studies on 1 and 2 indicate that the change of substituted groups in 3-phenyl ring of pyrazoline ring will change the peak intensity and peak locations both in electron spectra and fluorescence spectra.
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Acknowledgments
This work was supported by Huaian Science & Technology Bureau, Jiangsu Province, P. R. China (HAG07025) and Fund of Huanyin Teachers College (07HSBS004, 08HSJSK003). Fund of Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials (JSKC08047).
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Zhao, P.S., Li, R.Q., Sun, X.J. et al. Comparative study on two 2-pyrazoline derivatives with experimental and theoretical methods. Struct Chem 20, 443–451 (2009). https://doi.org/10.1007/s11224-009-9436-x
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DOI: https://doi.org/10.1007/s11224-009-9436-x