Unprecedented formation of binuclear copper(II) complex with a perylene derived ligand by the oxidative reaction

A two-dimensional π-π stacking of perylene moieties was formed in the newly synthesized perylene-pendent tridentate ligand, N-(3-perylenylmethyl)-N,N-bis(2-pyridylmethyl)amine, perbpa. The oxidation of the ligand by I2 under the coexistence of CuCl2·2H2O yielded an unprecedented complex, [L0CuII(μ-Cl)2CuIIL0 (figure)](I3)2 (L = perbpa), perylene groups in which were neutral in an electronic state and were dimerized.