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Experimental and DFT studies of (E)-2-[2-(2,6-dichlorophenyl)ethenyl]-8-hydroxyquinoline: electronic and vibrational properties.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (2013-02-19)
Wenqi Sun, Guozan Yuan, Jingxin Liu, Li Ma, Chengbu Liu
RÉSUMÉ

The title molecule (E)-2-[2-(2,6-dichlorophenyl)ethenyl]-8-hydroxyquinoline (DPEQ) was synthesized and characterized by FT-IR, UV-vis, NMR spectroscopy. The molecular geometry, vibrational frequencies and gauge independent atomic orbital (GIAO) 1H and 13C NMR chemical shift values of the compound in the ground state have been calculated by using the density functional theory (DFT) method. All the assignments of the theoretical frequencies were performed by potential energy distributions using VEDA 4 program. The calculated results indicate that the theoretical vibrational frequencies, 1H and 13C NMR chemical shift values show good agreement with experimental data. The electronic properties like UV-vis spectral analysis and HOMO-LUMO analysis of DPEQ have been reported and compared with experimental data. Information about the size, shape, charge density distribution and site of chemical reactivity of the molecule has been obtained by mapping electron density isosurface with molecular electrostatic potential (MEP).

MATÉRIAUX
Référence du produit
Marque
Description du produit

Sigma-Aldrich
8-Quinolinol, ACS reagent, 98.5%
Sigma-Aldrich
8-Hydroxyquinoline
Sigma-Aldrich
8-Quinolinol, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99% (perchloric acid titration)
Supelco
8-Quinolinol, PESTANAL®, analytical standard