SYNTHESIS, CHARACTERIZATION, ANTIOXIDANT ACTIVITY EVALUATION OF 3d METALS COMPLEXES WITH N(4)-((3)-ETHYL BENZOATE) THIOSEMICARBAZONES OF 2-FORMYL(2-ACETYL, 2-BENZOIL)PYRIDINE
The paper presents the synthesis of new coordination compounds of Cu(II), Mn(II), Fe(III) Co(III), Ni(II) and Zn(II) with N(4)-((3)-ethyl benzoate)thiosemicarbazones of 2-formyl pyridine derivatives obtained through the condensation of N(4)-((m)-ethyl benzoate) thiosemicarbazide with 2-pyridinecarb...
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| Format: | Article |
| Language: | English |
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Moldova State University
2022-12-01
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| Series: | Studia Universitatis Moldaviae: Stiinte reale si ale naturii |
| Online Access: | https://ojs.studiamsu.md/index.php/stiinte_reale_naturii/article/view/3210 |
| Summary: | The paper presents the synthesis of new coordination compounds of Cu(II), Mn(II), Fe(III) Co(III), Ni(II) and Zn(II) with N(4)-((3)-ethyl benzoate)thiosemicarbazones of 2-formyl pyridine derivatives obtained through the condensation of N(4)-((m)-ethyl benzoate) thiosemicarbazide with 2-pyridinecarboxaldehyde, 2-acetylpyridine and 2-benzoylpyridine. The characterization of new compounds was done by 1H NMR, 13C NMR, IR spectroscopy, conductivity and elemental analysis. In addition, the structures of the ligands (HL1,3) were determined by single-crystal X-ray diffraction. The effect of these complexes on antioxidant activity were studied and compared with those of free ligands. The best result was found to be on coordination compound [Zn(L1)Cl], with IC50 = 11.45 µM, it is better than the free ligand HL1, IC50 = 13.15 µM and is better than the substance Trolox, IC50 = 15.86 µM (it is a pronounced antioxidant taken as a control substance). Keywords: synthesis, characterization, thiosemicarbazones, coordination compounds, antioxidant activity.
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| ISSN: | 1814-3237 1857-498X |