Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, ( ISI ), Volume (83), No (1), Year (2011-1) , Pages (467-471)

Title : ( N,N'-dipyridoxyl Schiff bases: Synthesis, experimental and theoretical characterization )

Authors: Ali Beyramabadia , Ali Morsali , Malihe Javan Khoshkholgh , Abbas Ali Esmaeili ,

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Three N,N'-dipyridoxyl Schiff bases (L1, L2 and L3) have been newly synthesized and characterized by IR, 1H NMR, mass spectrometry and elemental analysis. Their optimized geometries together with the theoretical assignment of the vibrational frequencies and the 1H NMR chemical shifts of them have been computed by using density functional theory (DFT) method. In the optimized structures of the Schiff bases, two pyridine rings are not in a same plane; however the substitutions are essentially in the same plane with the pyridine rings. Also, the benzene ring(s) in the bridge region is (are) not in the same plane with the pyridine rings and azomethine moieties. In all the species, engagement in intramolecularhydrogen bonds causes to weakness of the phenolic O–H bonds. Consistency between the theoretical results and experimental evidence confirms suitability of the optimized geometries for the synthesized Schiff bases.

Keywords

, DFT, IR assignment, NMR, Schiff base, Dipyridoxyl,
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@article{paperid:1025482,
author = {Ali Beyramabadia and Ali Morsali and Malihe Javan Khoshkholgh and Esmaeili, Abbas Ali},
title = {N,N'-dipyridoxyl Schiff bases: Synthesis, experimental and theoretical characterization},
journal = {Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy},
year = {2011},
volume = {83},
number = {1},
month = {January},
issn = {1386-1425},
pages = {467--471},
numpages = {4},
keywords = {DFT; IR assignment; NMR; Schiff base; Dipyridoxyl; Theoretical},
}

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%0 Journal Article
%T N,N'-dipyridoxyl Schiff bases: Synthesis, experimental and theoretical characterization
%A Ali Beyramabadia
%A Ali Morsali
%A Malihe Javan Khoshkholgh
%A Esmaeili, Abbas Ali
%J Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
%@ 1386-1425
%D 2011

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