DFT, FT-Raman and FT-IR investigations of 5-o-tolyl-2-pentene |
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Authors: | Parlak Cemal Bilge Metin Kalaycı Taner Bardakçı Belgin |
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Affiliation: | Department of Physics, Dumlup?nar University, 43100 Kütahya, Turkey. cparlak@dpu.edu.tr |
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Abstract: | FT-IR and Raman spectra of 5-o-tolyl-2-pentene (OTP) have been experimentally reported in the region of 4000-10 cm(-1) and 4000-100 cm(-1), respectively. The optimized geometric parameters, normal mode frequencies and corresponding vibrational assignments of cis and trans isomers of OTP (C12H16) have been theoretically examined by means of B3LYP hybrid density functional theory (DFT) method together with 6-31G(d) and 6-31++G(d,p) basis sets. Furthermore, reliable vibrational assignments have made on the basis of potential energy distribution (PED) calculated. Comparison between the experimental and theoretical results indicates that density functional B3LYP method is able to provide satisfactory results for predicting vibrational wavenumbers and trans isomer is supposed to be the most stable form of OTP molecule. |
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