The Synthesis of Four New Unsymmetrical Vic-Dioximes and Their Complexes with Some Transition Metals

Abstract

In this study, anti-p-tolylchloroglyoxime (PTCGH₂) has been synthesized by chlorination of anti-p-tolylalyoxime. The reaction of PTCGH₂ with suitable arylamines in ethanol between -10°C and -15°C gives unsymmetrical vic-dioximes. namely, o-toluidino-p-tolylglyoxime (C₁₆H₁₇N₃O₂), 1-naphthylamino-p-tolylglyoxime (C₁₉H₁₇N₃O₂), 1,1′-biphenyl-4-amino-4′-amino-p-tolylglyoxime (C₂₁H₂₀N₄O₂), N-(2-methylpyridyl)amino-p.-tolylglyoxime (C₁₅H₁₆N₄O₂). The Cu(II) and Ni(II) complexes of these ligands are square-planar while the Co(II) complexes are octahedral with water molecules as axial ligands. ¹H-NMR, mass and IR spectra and elemental analyses data are given.