Benzidine-N,N,N',N'-tetraacetic acid (TAB) and its binuclear Cu^II complex were synthesized by condensation of benzidine and monochloroacetic acid in a 1:4 molar ratio. The composition and structure of the obtained compounds were studied by IR, electron spectroscopy, EPR, derivatography and elemental analysis. The surface morphology of the synthesized compounds was studied using a NeoScope Jeol JCM-5000 scanning electron microscope. The magnetic moment of the binuclear Cu^II complex of benzidine-N,N,N',N'-tetraacetic acid is µeff = 2.46 B.M. The electronic exchange interaction between Cu²⁺ ions in the binuclear copper complex is very small. In the electronic spectrum of the CuII complex of benzidine-N,N,N',N'-tetraacetic acid, the peaks at wavelengths of 230, 290, and 405 nm can be attributed to electronic transitions of metal ions. Thermogravimetric analysis showed that the CuII complex of benzidine-N,N,N',N'-tetraacetic acid is stable up to temperatures above 600⁰C.

doi.org/10.32737/0005-2531-2024-3-69-75