The magnetic properties of some manganese(II) Schiff-base complexes and the oxidation products of NN′-ethylenebis(salicylaldiminato)manganese(II)

Abstract

The magnetic properties of Mn(salen) and several other manganese(II) Schiff-base complexes have been studied over the temperature range 80–300°K. These measurements, coupled with X-ray powder data, suggest a binuclear structure for Mn(salen), in which there is antiferromagnetic exchange. The data for the other complexes are discussed in terms of possible structures for these compounds. The magnetic properties of the aerial oxidation products of Mn(salen) are reported and discussed in terms of a binuclear compound (salen)Mn–O–Mn(salen),H₂O.