Theoretical studies on molecular structure and vibrational spectra of 8-hydroxyquinolinium picrate

Basoglu A., Avci D., Atalay Y., Celik F., Sahinbas T.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, vol.79, no.5, pp.1425-1429, 2011 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 79 Issue: 5
  • Publication Date: 2011
  • Doi Number: 10.1016/j.saa.2011.04.080
  • Journal Name: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1425-1429
  • Keywords: 8-Hydroxyquinolinium picrate (8-HQP), DFT and HF, IR spectra, Molecular structure, Vibrational assignment, HOMO-LUMO energy, CRYSTAL-STRUCTURE, ACID, COMPLEX
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

Quantum chemical calculations of geometrical structure and vibrational wavenumbers of 8-hydroxyquinolinium picrate (8-HQP) were carried out by ab initio HF and density functional (DFT/B3LYP) method with 6-31++G(dp) basis set. The calculated geometric parameters of 8-HQP are presented. A detailed interpretation of the infrared spectra of 8-hydroxyquinolinium picrate (8-HQP) are also reported. Theoretical molecular frontier orbital energies of the title compound have been calculated using the method mentioned above in order to understand this phenomenon in the context of molecular orbital picture. The molecular HOMOs and LUMOs generated via HF and B3LYP method have been outlined. (C) 2011 Elsevier B.V. All rights reserved.