Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université de Paris Sud 11, 91405 Orsay Cedex, France.
Inorg Chem. 2013 May 6;52(9):5194-200. doi: 10.1021/ic400098c. Epub 2013 Apr 19.
A family of lanthanide complexes has been synthesized by the subcomponent self-assembly methodology. Molecular architectures, which were stable in solution and under ambient conditions, were designed by the in situ formation of ligands around lanthanide ion templates. Magnetic studies indicated that, despite the low C2 symmetry, 1 and 2 display single molecule magnet (SMM) behavior, with 1 exhibiting an effective energy barrier of the relaxation of the magnetization U(eff)/k(B) = 50 K and the pre-exponential factor τ(o) = 6.80 × 10(-7) s. Step-like features in the hysteresis loops indicate the presence of quantum tunneling of the magnetization (QTM).
已通过亚组分自组装方法合成了镧系元素配合物家族。通过在镧系元素离子模板周围原位形成配体，设计了在溶液中和环境条件下稳定的分子结构。磁性研究表明，尽管 1 和 2 的 C2 对称性较低，但它们表现出单分子磁体（SMM）行为，其中 1 表现出有效能量壁垒的磁化弛豫 U(eff)/k(B) = 50 K 和预指数因子 τ(o) = 6.80 × 10(-7) s。磁滞回线中的阶跃特征表明存在磁化量子隧穿（QTM）。
