Synthesis, Characterization and Chromogenic Properties of Lead (II) Complexes Containing Hydrazonic Ligands

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Abstract

The hydrazine and hydrazide compounds were subjected to condensation reaction with ketone and different aldehyde derivatives affording the corresponding expected hydrazones.Tow hydrazone ligands, namely, 4-hydroxy-(2-hydroxy-3-methoxybenzylidene)benzohydrazide(L1) and 4-hydroxy-(2-hydroxy-4-methoxybenzylidene) benzohydrazide(L2) were synthesized and characterized. The complexationof these ligands with Pb2+ was also investigatedand characterized. The chemical structures were found to be consistent with both analytical and spectroscopic data (CHN, FTIR, UV/Vis, TGA, 1H NMR and 13C NMR). The stoichiomtric ratio of their complexes with Pb2+ was found to be 1:1 for (L1-Pb2+) and (L2-Pb2+). The chromogenic properties of the ligands upon their complexation with Pb2+ was carried out in different solvents including methanol, ethanol, acetone, acetonitrile, dimethylsulphoxide, and tetrahydrofuran. DMSO was found to be the best solvent forthe complexation.

Item Type: Article
Uncontrolled Keywords: Acetonitrile; Dimethylsulfoxide; Ethano; 4-hydroxybenzoylhydrazine; Tetrahydrofuran; Methanol; Hydrochloric acid; 2-Hdroxy-3-methoxybenzaldehyde; 2-Hydroxy-4-methoxybenzaldehyde
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 01 Apr 2016 03:57
Last Modified: 24 Jan 2018 02:25
URI: http://umpir.ump.edu.my/id/eprint/12578
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