Intermolecular Ferromagnetic Interaction of 4-(1-Pyrenylmethyleneamino)-2,2,6,6-Tetra Methylpiperidin-1-Oxyl

Abstract The magnetic properties of a microcrystalline sample of the title free radical were measured. This magnetic behavior can be interpreted in terms of ferromagnetic interaction inside chains or sheets accompanied by antiferromagnetic coupling between them. Other organic TEMPO derivatives containing donor or acceptor sites were synthesized.