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A new heterocyclic ligand (1,5-dimethyl-2-phenyl-4-(pyrimidin-2- yldiazenyl)-1,2-dihydro-3H-pyrazol-3-one, was synthesized by the diazotization of 2- (chlorodiazenyl)pyrimidine, and coupling with antipyrine to produce a new azo dye in an alkaline alcoholic solution under optimized experimental conditions (Azo-pyrm-Ap) (pyrimidin-2-yldiazenyl) ligand. and react with 1,10-phenanthroline, Ferric(II), Cobalt(II), Nickel(II), Copper(II), Zink(II), and Merrcury(II) ions were used to build the structure of mixed-ligand Tatradentate complexes. They confirmed all that by  1 H- NMR,UVevisb, Fesem, XRD (DSC-TG) thermal analysis, Inferred- IR Magnetic susceptibility, The(C.H and N) analysis, molar conductance, and atomic absorption are all examples of spectroscopic techniques. The isolated solid complexes have been to have identified the formula in general [M (L)(phen) Cl] and [M (L)(phen)(H2O)] Cl, For prepared complexes, conductivity measurements revealed a [1:1] electrolyte. for Fe(II) and non-electrolyte for the Ni(II), Co(II), Zn(II), Cu(II), and, Hg(II) complexes. assemblages According to the spectral and analytical results, this ligand acts as a Bidentate chelating agent, with all metal ions having a coordination number of six. Finally, biological activity of the synthesized ligand and metal complexes against bacterial species was evaluated.,  Staphylococcus aureus  is a Gram positive bacteria, and  Escherichia coli, Pseudomonas aereuguinosa, and Klebsiella pneumoniaea  are Gram negative bacteria. and it was found that these compounds have different inhibitory activity on bacteria growth.

journal of physics. conference series

Synthesis, Characterization, DFT and Antibacterial, Azo Ligand Derived From 2-Amino pyrimidine With Antipyrine Mixed ligand Complexes involving 1,10- phenanthroline