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Abstract

According to previous studies, a new azo ligand (N-(3-acetyl-2-hydroxy-5-methyl-phenyl)N-(4-carboxy-cyclohexylmethyl)-diazonium salt) was prepared and after verifying the proposed formula according to the results of the analyzes and after using Ligand to prepare a series of complexes using equal molar ratios (1:1) of the ligand and its reaction with each of the salts of manganese, cobalt, nickel, copper and zinc, and after verification according to spectroscopic (ultraviolet and infrared) and diagnostic analysis techniques, which gave tetrahedral shapes for all complexes in a neutral formula, and the ligand is tridentate (NOO) related to azo, ketonic and phenolic hydroxyl group, respectively. Then, the thermal decomposition of some compounds prepared using the TGA and DSC was studied and mass spectroscopy. The dye of the complexes prepared from it was used to determine their ability to inhibit free radicals by measuring their ability as antioxidants using DPPH as a free radical and ascorbic acid as a standard substance, and determining the IC50 value, as it was found that the ligand has a high ability to inhibit free radicals, and the complexes' ability to inhibit it varied according to the IC50 value. The results were as following (Ascorbic acid(0.022) < LH(0.124) < Zn-complex(0.186) < Mn-complex(0.316) < Co-complex(0.635)

Keywords

Antioxidant, Azo complexes, 4-aminoethyl-cyclohexanecarboxylic, Mass spectra, Thermal analysis

Subject Area

Chemistry

Article Type

Article

First Page

801

Last Page

812

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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