Crystal structure and magnetic dynamics of a novel salen type and β-diketonate Dy2 complex

• A novel salen type dinuclear dysprosium complex have been isolated with rigid salen-type and β–diketonate ligands
• The structure of the salen type ligand dominate the coordination geometries of the Dy(III) ions
• The magnetic analysis suggests high axial coordination geometry lead typical SMM behavior with a higher energy barrier
• The presence of two magnetic relaxations is associated with differences bond lengths around Dy(III) center

A novel salen type dinuclear dysprosium complex e.g., [Dy2(H2L)(acac)6]·4CH3OH (1) [H2L = N,N′-(1.3-propylene)bis(3-methoxysalicylideneimine) has been isolated by reactions of Dy(acac)3·H2O (acac = acetylacetonate) with salen type (H2L), respectively. X-ray crystallographic analyses reveal that asymmetric Dy(III) ions for 1 was bridged by one ligand displaying bicapped trigonal prism coordination geometry. Magnetic measurement shows that complex 1 exhibit slow relaxations under zero dc field. The presence of two magnetic relaxations in complex 1 is associated with the presence of minute differences in bond lengths around Dy(III) center.

A salen type dinuclear dysprosium complex bridged by one ligand have been isolated which show magnetic properties of two magnetic relaxations, witch is associated with the presence of minute differences in bond lengths around Dy(III) center.Figure optionsDownload as PowerPoint slide