Alternate Synthetic Pathway Leading to Isolation of a Dinuclear Single‐Molecule Magnet

Abstract

Using the Schiff‐base ligand 1,5‐bis(salicylidene)carbohydrazide (H3bsc) a unique dinuclear dysprosium(III) compound, [Dy2(µ‐OH)(bsc) (NO3)2(DMF)3(H2O)]·THF·2DMF (1·THF·2DMF), has been synthesized. The structural and magnetic properties are fully studied and single‐molecule magnetic behavior with an energy barrier (Ueff = 123 K) has been observed.

Structures and Single-Molecule Magnet Behavior of Dy3 and Dy4 Clusters Constructed by Different Dysprosium(III) Salts

“…Due to the large space volume of the bridged Schiff base ligand filling the coordination site, the complexes formed a centrosymmetric tetranuclear system, preventing the formation of large metal clusters. 44 The formation of different nuclear complexes could be easily observed by fragmentation of the synthesis process. This avoided the regulation of complex processes and provided further guidance for the formation of advanced nuclear.…”

“…In terms of the cis -Schiff base ligand, the phenoxy ion continued to participate in the coordination and played a bridging role in joining the two Dy 2 L 3 systems, thus forming 2 . Due to the large space volume of the bridged Schiff base ligand filling the coordination site, the complexes formed a centrosymmetric tetranuclear system, preventing the formation of large metal clusters . The formation of different nuclear complexes could be easily observed by fragmentation of the synthesis process.…”