Find in Library

The complexes of lanthanide metals, especially dysprosium, can generally exhibit excellent magnetic properties. By means of modifying ligands, dual functions or even multi-functions can be achieved. Here, we synthesized an eight-coordinate Dy(III) complex <b>1</b>, [Dy(HL-o)₂(MeOH)₂](ClO₄)₃·4.5MeOH, which is single-molecule magnet (SMM), and the introduction of the rhodamine 6G chromophore in the ring-opened ligand HL-o realizes ligand-centered fluorescence in addition to SMM. Magnetic measurements and ab initio calculations indicate that the magnetic relaxation for complex <b>1</b> should be due to the Raman relaxation process. Studies on magneto-structural correlationship of the rhodamine salicylaldehyde hydrazone Dy(III) complexes show that the calculated energy of the first Kramers Doublet (<i>E</i>_KD1) is basically related to the O_phenoxy-Dy-O_phenoxy bond angle, i.e., the larger O_phenoxy-Dy-O_phenoxy bond angle corresponds to a larger <i>E</i>_KD1.