A novel type of copper(II) dimers with tetradentate Schiff bases: X-ray crystal structure and magnetic properties of bis-µ-[N,N′-ethylenebis(pyrrol-2-ylmethyleneaminato)]-dicopper(II)

Abstract

The 1:1 complex of copper(II) with N,N′-ethylenebis(pyrrol-2-ylmethyleneamine) in benzene-inclusion crystals forms a novel copper(II) dimer in which each of the two interwined Schiff bases binds two copper atoms with a separation of 3.29 Å and with a strong antiferromagnetic interaction of J–61.2 cm^–1 as shown by X-ray structural analysis and by magnetic susceptibility measurements.