Magnetic investigation in di- and tetranuclear lanthanide complexes

By using a crab-like hydrazone ligand, dinuclear and tetranuclear dysprosium-based complexes Dy2 and Dy4 have been isolated. Magnetic investigation reveals that complex Dy2 shows typical single-molecule magnet behavior under a zero field, benefiting from the ferromagnetic coupling between the DyIII ions, while Dy4 possesses a diamagnetic ground state with the anisotropy axes of DyIII ions in centripetal arrangement. The magnetic anisotropies and couplings were confirmed by ab initio calculations.