Synthesis, Characterization and PXRD Crystal Structure of Benzidinedioxime

Recently Schiff bases compounds were played an importance role in the preparation of novelty complex compounds, and they are used in many fields such as industrial technology, pharmaceutical, biochemistry, and physiology. The benzidinedioxime Schiff base N-((2E,3E)-3-[(4'-((Z)-[(3E)-3-(hydroxyimino)butan-2-ylidene]amino)[1,1'-biphenyl]-4yl) imino]butan-2-ylidene) hydroxylamine is synthesized by the condensation reaction of benzidine with diacetylmonoxime in the (1:2) mole ratios rspectively. The chemical structure, electronic properties, and crystal structure of benzidinedioxime were investigated using different techniques including elemental analysis, powder X-ray diffraction (PXRD), FTIR, UV−Visible and NMR spectroscopy. The FT-IR, NMR, and elemental analysis confirmed that two moles of diacetylmonoxime and one mole of benzidine reacted to formation of the Schiff base. The UV-Vis spectrum revealed smooth and strong peaks due to electronic vibration and rotation transitions indicating n→σ*, n→п*, and п→п* electronic transitions. Benzidinedioxime has a triclinic space group with P1(1) point groups. The NMR analyses showed two peaks at different chemical shifts for both the biphenyl and dimethyl groups in different environments.