The synthesis and characterization of new substituted aminoglyoximes and their complexes with some transition metals

In this study, six new substituted aminoglyoximes, N-(4-methoxypheny)aminoglyoxime ((LH2)-H-1), N-(5-chloro-2-metoxyphenyl)aminoglyoxime ((LH2)-H-2), N-(3-chloro-4-metoxyphenyl)aminoglyoxime ((LH2)-H-3), N,N'-bis(4-metoxyphenyl)diaminoglyoxime ((LH2)-H-4), N,N'-bis(5-chloro-2-metoxyphenyl)diaminoglyoxime ((LH2)-H-5) and N,N'-bis(3-chloro-4-metoxyphenyl)diaminoglyoxime ((LH2)-H-6) have been synthesized from <(anti)under bar>-chloroglyoxime or <(anti)under bar>-dichloroglyoxime and corresponding substituted aromatic amines. The Ni(II), Cu(II), and Co(II) complexes of these ligands were prepared. The structures of these ligands and their complexes were identified by using IR and H-1 NMR spectral data, elemental analyses, thermogravimetric analyses (TGA) and magnetic measurements. The Ni(II) and Cu(II) complexes of these ligands are proposed to be square-planar while the Co(II) complexes ale square-pyramidal.