Synthesis and characterization of a new (E,E)-dioxime and its homonuclear complexes

Abstract

N'-(4'-Benzo[15-crown-5]naphthylaminoglyoxime (H2L) and its sodium chloride complex (H2L·NaCl) have been prepared from 2-naphthylchloroglyoxime, 4'-aminobenzo[15-crown-5] and sodium bicarbonate or sodium bicarbonate and sodium chloride. Nickel(II), cobalt(II) and copper(II) complexes of H2L and H2L·NaCl have a metal-ligand ratio of 1:2 and the ligand coordinates through the two N atoms, as do most of the vic-dioximes. The BF 2 + -capped Ni(II), Co(III) and mononuclear complexes of thevic-dioxime were prepared. The macrocyclic ligands and their transition metal complexes have been characterized on the basis of IR, 1H NMR spectroscopy and elemental analyses data. © Springer 2005.