SYNTHESIS OF SERIES CHEMICAL COMPOUNDS AND STUDYING OF THEIR APPLICATIONS (LIQUID CRYSTAL, THERMO-PHYSICAL), BIOLOGICAL ACTIVITY, COMPLEXATION WITH PB (II)

Abstract

ABSTRACT
Objective: Series new organic compounds were synthesized and identified in our paper via types of reactions represented by condensation reaction,
alkylation reaction, and cyclization reaction.
Methods: Preparation of many compounds through various reactions which studied several applications such as liquid crystal (LC), differential
scanning calorimetry (DSC)-measurement, complexation with ion Pb, and other chemical studies such as conditions of complex.
Results: The structure of the newly compounds were investigated using thin-layer chromatography-plate and many techniques (Fourier transforminfrared,

H nuclear magnetic resonance, ultraviolet-visible, determination of optimal conditions, ratio of ligand:metal [L: M], molar conductivity
measurements, some physical characterization) then studying the biological activity of compounds.
1
Conclusion: All compounds appeared application in LC, as ligands with lead ion Pb (II), it gave mole ratio of L:M (1:1) as a complex, they have been
appeared high stability in DSC-measurements and gave good activity in biostudying against bacteria.
Keywords: Liquid crystal, Differential scanning calorimetry, Azo, Schiff, Pb, Biological active, Formazan.