Synthesis, Characterization and Thermal Analysis of Cr(III), Mn(II) and Zn(II)Complexes of a New Acidicazo Ligand

The researchers wanted to make a novel azo imidazole as a follow-up to their previous work. We focused on the ligand 4-[(2-amino-4-phenylazo)-methyl]-cyclohexane carboxylic acid as a derivative of trans-4-(aminomethyl) cyclohexane carboxylic acid diazonium salt, synthesized a series of its chelate complexes with metal ions, and characterized these compounds using a variety techniques, including elemental analysis, FT-IR, LC-Mass, NMR and UV-Vis spectral process as well TGA, conductivity and magnetic quantifications. Analytical data showed that the Cr(III), Mn(II) and Zn(II)  complexes out to 1:1 metal-ligand ratio with octahedral geometry except Mn complex has tetrahedral geometry.