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

Rassem, Hesham H. A. and Nour, A. H. (2015) Synthesis, Characterization and Chromogenic Properties of Lead (II) Complexes Containing Hydrazonic Ligands. Australian Journal of Basic and Applied Sciences, 9 (31). pp. 90-102. ISSN 1991-8178

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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
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