Synthesis, Characterization, and Antimicrobial Activity Studies of New Schiff Base Tetradentate Ligands and Their Manganese (II) Complexes
Elham Abdalrahem Bin Selim, Mohammed Hadi Al–Douh, Dahab Salim Al–Nohey, Wedad Mohammed Al–Haik, Khalid Saeed Sonbol
Asian Journal of Chemical Sciences · pp. 35–46 · Published 6 Jun 2020
10.9734/ajocs/2020/v7i419030Abstract
Two Schiff base tetradentate ligands 4 and 5 were synthesized by condensation reactions of 4-hydroxy-3-methoxy-5-((2-nitrophenyl)diazenyl) benzaldehyde 1 with 1,2-diaminoethane 2 and 1,2-diaminobenzene 3, respectively. Treatment of synthesized ligands with the manganese (II) chloride MnCl2 6 gave two complexes 7 and 8 of general formula ML. The synthesized ligands and their complexes were characterized by FTIR, UV-Vis, Mass spectroscopy, and elemental analysis. The biological activity of the synthesized compounds were tested. It was found that ligand 5 and the complexes 7 and 8 possess antibacterial activity against the gram –ve Proteus mirabilis.
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