Synthesis and characterization of benzil crown cyclic Schiff base ligand and its metal complexes

ABSTRACT. The reaction between benzil and hexamethylenediamine formed a new ligand [L], [(1Z,3Z)-2,3-diphenyl-5,6,7,8,9,10-hexahydro-1,4-diazecine], of the type [N2], was synthesized by condensation through Schiff base hexamethylenediamine. reacts with Mnп, Niп Coп metal ions to give complexes general formula: [M(L)Cl2]. elemental investigations have been used analyze its CHN, FT-IR, UV-Vis, TLC, mass spectrum, melting point study biological activity compounds. From data obtained, proposed molecular structure adopts square planar about ions. reveals formation [N2] it's ion structures metal:ligand ratio 1:1, which can be employed in variety fields such as medicine industry. 
 KEY WORDS: Benzil, Hexamethylenediamine, Metal complexes, Square structure
 Bull. Chem. Soc. Ethiop. 2022, 36(4), 791-799. DOI: https://dx.doi.org/10.4314/bcse.v36i4.6