Synthesis and characterization of [Cu(Me2oxpn)Ni(NO2)(tmen)](ClO4): a single ferrimagnetic dinuclear CuII–NiII complex acting as weak molecule-based magnet

Abstract

The new heterodinuclear complex [Cu(Me₂oxpn)Ni(NO₂)(tmen)](ClO₄), that exhibits strong antiferromagnetic intramolecular coupling between Cu^II and Ni^II ions (ferrimagnetic behavior), shows ferromagnetic ordering at low temperature, due likely to a small canting phenomenon; it is one of the very few compounds made from isolated molecules that lead to cooperative magnetic behavior.