Synthesis and Characterization of N1´,N2´-dihydroxy-N1,N2- bis(pyridine-2-ylmethyl)ethanediimidamide and Its Mono and Dinuclear Zn(II), Cd(II) and Hg(II) Complexes

Abstract

A new vic-dioxime, N¹′,N²′-dihydroxy-N¹,N²-bis(pyridine- 2-ylmethyl)ethane diimidamide (H₂L) has been synthesized from (E,E)-dichloroglyoxime and 2-(aminomethyl) pyridine in THF. Mononuclear complexes of Zn(II), Cd(II) and Hg(II) have been prepared and were found to have a metal-ligand ratio of 1:1. The results indicated that the metal ions are coordinated through the two N atoms of the ligand. The synthesis of homo dinuclear complexes was achieved with Zn(II), Cd(II) and Hg(II) depending on the manner of addition of salts. The composition and the structural formula of the ligand and of the resulted complexes were confirmed by elemental analysis, IR, MS and NMR spectroscopy methods.