Combined experimental and theoretical studies on the vibrational spectra of 2-quinolinecarboxaldehyde

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Atıf İçin Kopyala

Küçük V., Altun A., Kumru M.

Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, cilt.85, sa.1, ss.92-98, 2012 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 85 Sayı: 1
• Basım Tarihi: 2012
• Doi Numarası: 10.1016/j.saa.2011.09.026
• Dergi Adı: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.92-98
• Anahtar Kelimeler: 2-Quinolinecarboxaldehyde, DFT, HF, IR spectrum, Normal modes, Raman spectrum
• İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

Combined experimental and theoretical studies have been performed on the structure and vibrational spectra (IR and Raman spectra including far region) of 2-quinolinecarboxaldehyde. Hartree-Fock (HF) and density functional B3LYP calculations have been employed with the 6-311++G(d,p) basis set for investigating the structural and spectroscopic properties of two possible aldehyde rotamers of 2-quinolinecarboxaldehyde. When the O atom of the aldehyde is farther away than the nitrogen atom of the quinoline, 2- quinolinecarboxaldehyde has the lowest possible energy, and thus is in its ground state. The computed vibrational frequencies of this lowest energy rotamer agree also slightly better than those of the higher energy rotamer with the experimental frequencies after the computed frequencies are scaled. © 2011 Elsevier B.V. All rights reserved.