alexa Abstract | Tetraaza macrocyclic complexes: Synthesis, elucidation, antibacterial and antifungal studies

Journal of Chemical and Pharmaceutical Research
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Abstract

Two Teteraazamacrocyclic ligands; 1,6,9,14-Tetraazacyclodotriaconta-1, 5, 7, 8, 9, 13, 15, 16, 18, 21, 23, 25, 28, 31-Tetradecene(civel)and1,6,9,14-tetraaza-3,4,11,12-tetrahydroxyl-cyclodotriaconta-1, 5, 7 , 8, 9, 13, 15, 16, 18, 21, 23, 25, 28, 31-tetradecene (jicvel) were synthesized. The ligand was found to exist in complex of the metal salt that was used for its synthesis. Two precursors 2, 9-dimethyl-1, 10-phenanthroline and 1, 10-phenanthroline-2, 9- dicarbaldehyde were used with the later a product of oxidation of the 2, 9-dimethyl-1, 10-phenanthroline. The civel ligand was synthesized by the condensation of the two precursors using Zeisel method. The structure of the ligand was elucidated using results obtained from NMR (1HNMR, 13NMR, HHCOSY, HMBC and HSQC), FTIR, HPLC and UV-visible analysis. The UV-visible results reveal that the ligands are not completely conjugated. The compounds A and E are of Orthorhombic and Cubic crystal system. Their cell volumes are 1162.05 Ǻ3 and 249.06 Ǻ3 for samples A and E respectively. The ligands are strong field ligands and can have application in complexation and in drug formation as their tetraaza counterparts.

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Author(s): E C Ohaekenyem V I Onwukeme F B Okoye J T Okonkwo and C T Onyema

Keywords

Supramolecules, tetraaza macrocycles, ligand, and phenanthroline, Tetraaza macrocyclic complexes

 
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