FT-Raman and FTIR Spectroscopic Investigation, First Hyper Polarizability, Homo-Lumo Analysis of P-Fluorobenzonitrile (PFBN)
International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
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Research Paper | Physics Science | India | Volume 7 Issue 9, September 2018

FT-Raman and FTIR Spectroscopic Investigation, First Hyper Polarizability, Homo-Lumo Analysis of P-Fluorobenzonitrile (PFBN)

S. Aslin, D. Usha, M.Amalnathan

Quantum chemical density functional calculations were carried out for P-fluorobenzonitrile (PFBN) with the GAUSSIAN 09W using ab initio and Becke-3-Lee-Yang-Parr (B3LYP) functional. The observed FT-IR and FT-Raman vibrational frequencies are analysed and compared with theoretically predicted vibrational frequencies. The geometries and normal modes of vibration obtained from DFT method are in good agreement with the experimental data. The first-order hyperpolarizability () of the investigated molecule was computed using DFT calculations. The calculated HOMO and LUMO energies shows that charge transfer occur within molecule. The influences of nitrogen on the geometry of benzene and its normal modes of vibrations have also been discussed.

Keywords: Ab initio, Vibrational Spectra, HOMO-LUMO, Hyperpolarizaility

Edition: Volume 7 Issue 9, September 2018

Pages: 1144 - 1149

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How to Cite this Article?

S. Aslin, D. Usha, M.Amalnathan, "FT-Raman and FTIR Spectroscopic Investigation, First Hyper Polarizability, Homo-Lumo Analysis of P-Fluorobenzonitrile (PFBN)", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=ART20191405, Volume 7 Issue 9, September 2018, 1144 - 1149

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