Three lanthanide-radical complexes: Synthesis, structure and magnetic properties

Three new lanthanide-radical complexes containing the same radical ligand were successfully synthesized, which all display radical-Ln(III)-radical (Ln = Pr (1), Gd (2), Ho(3)) tri-spin structures. The magnetic studies revealed that, for complex 2, the interactions between the Gd(III) ion and radical are ferromagnetic, while the interaction between two radicals is antiferromagnetic. In complexes 1 and 3, antiferromagnetic couplings exist between the lanthanide ions and radicals.