THE SYNTHESIS OF FOUR NEW UNSYMMETRICAL VIC-DIOXIMES AND THEIR COMPLEXES WITH SOME TRANSITION METALS

摘要

In this study, anti-(p-nitrophenyl)chloroglyoxime (PNPCGH(2)) has been synthesized by chlorination of anti-p-nitrophenylglyoxime. The reaction of PNPCGH(2) with suitable aryl or arylkalyamines in ethanol between -5 degrees C and 15 degrees C gives unsymmetrical vic-dioximes, namely, o-toluidino-p-nitrophenylglyoxime L(1), 1-naphthylamino-p-nitrophenylglyoxime L(2), 1,1'-biphenyl-4-amino-4'-amino-p-nitro-phenylglyoxine L(3) or N-(2-methylpyridyl)amino-p-nitrophenylglyoxime L(4). 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. H-1 NMR, IR spectra and elemental analyses data are given. [References: 14]