Metal-radical complexes [M(NITm-Py)2(N3)2(DMSO)2] [MÂ =Â Cu(II), Ni(II), Co(II)]: Syntheses, crystal structures and magnetic properties

Three new metal-radical complexes have been synthesized. The three complexes are three-spin complexes in which two radical ligands are coordinated to the metal ion through the nitrogen atoms of the pyridyl rings. The magnetic properties are analyzed in connection with their structures and the magnetic exchange mechanism is discussed.