A new synthesis of bis(2-{pyrid-2-yl}ethyl)amine (LH) from bis(2-{pyrid-2-yl}ethyl)hydroxylamine (LOH), and the copper-dependent reduction of LOH to LH

Abstract

Solutions of [CuCl₂L^OH], and other reaction mixtures containing L^OH and Cu(II) or Cu(I) salts, degrade to yield dark green or brown residues containing the L^H ligand. In contrast, [MCl₂L^OH] (M = Zn, Ni, Co) are indefinitely stable in solution and the solid state.