Magnetic Properties of Hexanuclear Lanthanide(III) Clusters Incorporating a Central μ6-Carbonate Ligand Derived from Atmospheric CO2 Fixation

Three isostructural hexanuclear lanthanide­(III) clusters are reported (LnIII = Gd, Tb, and Dy). The metallic core of each complex displays an unusual arrangement of ions, which is stabilized by a μ6-carbonate ligand. Magnetic studies show that the LnIII ions in each compound are weakly exchange coupled, with the Tb and Dy analogues displaying single-molecule-magnet behavior.现已报道三种同结构六核三价镧系簇合物（LnIII = Gd、Tb、Dy）。每个配合物的金属核均呈现出非常规的离子排布方式，并由μ6-碳酸根配体稳定。磁学研究显示，各化合物中的三价镧系离子之间存在弱交换耦合作用，其中Tb和Dy的同构类似物表现出单分子磁体行为。