Abstract
In this research, the preparation of bidentate Schiff base was carried out via the condensation reaction of both the salicylaldehyde with 1-phenyl-2,3-dimethyl-4-amino-5-oxo-pyrazole to form the ligand (L). The mentioned ligand was used to prepare complexes with transition metal ions Mn(II), Co(II), Ni(II), Cu(II) and Zn(II). The resulting complexes were separated and characterized by FTIR and UV-Vis spectroscopic technique. Elemental analysis for Carbon, Hydrogen and Nitrogen elements, electronic spectra of the ligand and complexes were obtained, and the magnetic susceptibility tests were also achieved to measure the dipole moments. The molar conductivities were also measured and determination of chlorine content in the complexes and the metal ratio. The complexes have shown the octahydral shapes in the general formula [ML2Cl2], whereas M=Mn, Co, Ni, Cu and Zn, ligand which coordinated as bidentate behavior with nitrogen and oxygen as donor atoms.
Highlights
Schiff bases have often used as chelating ligands in the field of coordination chemistry and their metal complexes are of great interest for many years[1]
Schiff base derivatives have been studied with metal as Nickel (II) complex, the mentioned complex played a major role in both synthesis and structural research[4]
The bidentate ligand Schiff base has been prepared via 1-phenyl-2,3dimethyl-4-amino-5-oxo-pyrazole with salicylaldehyde to prepare the complexes with Mn, Co, Ni, Cu and Zn, divalent transition metals
Summary
Schiff bases have often used as chelating ligands in the field of coordination chemistry and their metal complexes are of great interest for many years[1]. Schiff base metal complexes have been widely studied because they have industrial, antifungal, antibacterial, anticancer and herbicidal applications[2,3]. Schiff base ligands with nitrogen donor atoms of the azomethane group and oxygen donor atoms of the carbonyl group afforded stable complexes with various transition metals[5]. Schiff bases ligands and their biological complexes have been studied extensively over the past decades. The bidentate ligand Schiff base has been prepared via 1-phenyl-2,3dimethyl-4-amino-5-oxo-pyrazole with salicylaldehyde to prepare the complexes with Mn, Co, Ni, Cu and Zn, divalent transition metals. Elemental analysis for Carbon, Hydrogen, and Nitrogen elements, electronic spectra of the ligand and complexes were obtained, conductivity measurements, magnetic susceptibility and determination of chlorine
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