Synthesis of a Novel Heterocyclic Dioxime and Its Mononuclear Complexes with Ni(II), Co(II), Cn(II), Zn(II), Cd(II) and Hg(II)

Abstract

In this work, a novel heterocyclic dioxime (2,3-hydroximino-4-phenyl-6-phenlyazo-1-thia-4,5-diazacyclohexa-5diene, H₂L) was synthesized by reacting dithizone with cyanogen di-N-oxide. H₂L forms mononuclear complexes [(HL)₂M] with a metal-ligand ratio of 1-2 with M = Ni(II), Co(II) and Cu(II). Zn(II), Cd(II) and Hg(II) form with H₂L complexes [(HL)CI(H₂O)M] which have a metal-ligand ratio of 1:1 and contain a six-membered chelate ring. Structures of these compounds are proposed based on elemental analyses, U. V. -Visible, IR, ¹H NW mass spectra and magnetic susceptibility measurements.