A linear 3d-4f tetranuclear CoIII2DyIII2 single-molecule magnet: synthesis, structure, and magnetic properties.
A linear tetranuclear 3d-4f Co(2) Dy(2)  cluster assembled from a polydentate Schiff base exhibits single-molecule magnet (SMM) behavior with an anisotropic barrier of 33.8 K. Due to the presence of diamagnetic cobalt(III) ions, the tetranuclear cluster of 1 behaves magnetically like a dinuclear Dy(2)  system. However, the diamagnetic segment might efficiently minimize undesirable intermolecular magnetic interactions, thereby improving the performance of the SMM behavior of 1. This discrete complex presents us with a unique opportunity to study the magnetic properties and to probe the dynamics of magnetization in a magnetically isolated Dy(2)  system.
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun 130022, P.R. China.
Lang
L
Zhao
Jianfeng
J
Wu
Shufang
S
Xue
Jinkui
J
Tang