Synthesis and Spectroscopic Characterization of Four New Substituted Piperazineglyoximes and Their Complexes with Some Transition Metals

Abstract

Four new substituted piperazineglyoximes. 4-methyl-1-piperazineglyoxime (MPGH₂) 4-benzyl-1-piperazineglyoxime (BPGH₂), 1.2-bis(4-methylpiperazine)glyoxime (BMPGH₂) and 1,2-bis(4-benzylpiperazine)glyoxime (BBPGH₂) have been synthesized by the reactions of anti-chloroglyoxime or dichloroglyoxime with substituted piperazines in ethanol. All these glyoximes are in the anti-form according to ¹H NMR. ¹³C NMR and IR spectral data. The complexes of Cu(II). Co(II) and Ni(II) with these four glyoxime ligands have been prepared and characterized by using IR and UV-VIS spectral data and elemental analyses