Kajiwara Takashi, Nakano Motohiro, Takaishi Shinya, Yamashita Masahiro
Department of Chemistry, Graduate School of Science, Tohoku University, and CREST, Japan Science and Technology Agency (JST), Aramaki, Aoba-ku, Sendai 980-8578, Japan.
Inorg Chem. 2008 Oct 6;47(19):8604-6. doi: 10.1021/ic8013656. Epub 2008 Aug 29.
Tb (III)-Cu (II)-based single-molecule magnet (SMM) and non-SMM were synthesized to investigate the relationship between magnetic anisotropy and the symmetry of the ligand field by the reaction of [TbCu( o-vanilate) 2(NO 3) 3] with methoxypropylamine (MeOC 3H 6NH 2, 1) or ethoxyethylamine (EtOC 2H 4NH 2, 2). In both complexes, Tb (III) ions have a bicapped square-antiprism coordination geometry. When the Tb (III) ion is in a less symmetrical ligand field, it has an easy-axis anisotropy and shows SMM behavior, whereas when it is in a more symmetrical environment, it has an easy-plane anisotropy and exhibits non-SMM behavior.
通过[TbCu(邻香草酸根)₂(NO₃)₃]与甲氧基丙胺（MeOC₃H₆NH₂，1）或乙氧基乙胺（EtOC₂H₄NH₂，2）反应，合成了基于Tb(III)-Cu(II)的单分子磁体（SMM）和非单分子磁体，以研究磁各向异性与配体场对称性之间的关系。在这两种配合物中，Tb(III)离子具有双帽方反棱柱配位几何结构。当Tb(III)离子处于对称性较低的配体场中时，它具有易轴各向异性并表现出单分子磁体行为，而当它处于对称性较高的环境中时，它具有易面各向异性并表现出非单分子磁体行为。
