Synthesis of N-(4′-Benzo[15-crown-5])biphenylaminoglyoxime and its complexes with some transition metals

N′-(4′-Benzo[15-crown-5])biphenylaminoglyoxime (H 2 L) and sodium chloride salt of N′-(4′-benzo[15-crown-5]) biphenylaminoglyoxime (H 2 L·NaCl) have been prepared from 4-biphenylchloroglyoxime, 4′-aminobenzo[15-crown-5], and sodium bicarbonate and sodium chloride. Nickel(II), cobalt(II), and copper(II) complexes with H 2 L and H 2 L·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. Their IR spectra and elemental analyses are given, together with 1 H NMR spectra of the ligands