Dinuclear dysprosium(III) complex derived from a multidentate bis-hydrazone Schiff base ligand: Synthesis, crystal structure and magnetic properties

Abstract

Starting from phloroglucinol, a multidentate Schiff base ligand, H3L [N, N'-((1E, 1′E)-(5-acetyl-2,4,6-trihydroxy-1,3-phenylene)bis(ethan-1-yl-1-ylidene)bis(2-hydroxy-2-phenylacetohydrazide)], decorated with multiple coordination sites has been designed. A dinuclear dysprosium complex, [{Dy(L)(H2O)2}2]·4CH3OH·3H2O (1), was synthesized by employing this ligand and characterized by elemental analysis, spectroscopic and structural investigations. Single crystal X-ray diffraction analysis reveals that 1 is a dinuclear Dy(III) complex with a large Dy…Dy distance. Magnetic investigation shows the absence of slow relaxation of the magnetization in 1 owing to the lack of an axial crystal-field.