Synthesis of Four New Substituted Arylaminoglyoximes and Their Complexes with Copper(II), Nickel(II), Cobalt(II), and Palladium(II)

Four new substituted aminoglyoximes, N-(4-sulfamido-phenyl) glyoxime (SAGH2), N-(4-nitrophenyl) aminoglyoxime (NGH2), N-(4-tolyl) aminoglyoxime (PTGH2) and N-(2-tolyl) aminoglyoxime (OTGH2) have been synthesized from anti-chloroglyoxime and the corresponding substituted amines. All these dioximes are in the trans-anti-form according to IR and NMR data. The complexes of these four ligands with Cu(II), Ni(II), Co(II) and Pd(II) are square planar H-bridged structures with a metal-ligand ratio of 1:2, except the Cu(II) complex of SAGH2 where the metal-liqand ratio is 1:1. In the case of NGH2, the 4-nitrophenylamino group is replaced by the -NH2 group when PdC12 dissolved in conc. ammonium hydroxide was used to prepare the palladium(II) complex. 1H-NMR, IR and UV-visible data of the new compounds are given.