Ligands having a C=O group and an -NH-R group adjacent to the oxime group have been prepared from ω-chloroisonitrosoacetophenone and aniline or aniline derivatives in the presence of NaHCO 3 . The Ni(II), Cu(II) and Co(II) complexes of the synthesised ligands have been prepared and characterised. The ligands are proposed to coordinate to the metal ions via the oxime oxygen and amide nitrogen atoms. Thermal analyses data reveals that the water in the complexes is non-coordinated to the metal ions. Binuclear and polymeric structures are suggested for all complexes. The complexes showed an antiferromagnetic effect.
In this study, six new unsymmetrical vic-dioximes, N-(3,4-dimethylphenyl)aminomethylglyoxime (L 1 H 2 ), N-(3-chloro-4-methylphenyl)aminomethyl-glyoxime (L 2 H 2 ), N-(2,6-dimethylphenyl)aminomethylglyoxime (L 3 H 2 ), N-(3,4-dimethylphenyl)aminophenylglyoxime (L 4 H 2 ), N-(3-chloro-4-methylphenyl)-aminophenylglyoxime (L 5 H 2 ) and N-(2,6dimethylphenyl)aminophenylglyoxime (L 6 H 2 ) have been synthesized from chloromethylglyoxime or chlorophenylglyoxime and the corresponding substituted aromatic amines. The Co(II), Ni(II) and Cu(II) complexes of these ligands were prepared. The structures of these new ligands and their complexes are proposed based upon IR, UV-Vis, 1 H NMR spectral data, magnetic measurements, and elemental analyses.
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