1D Chains of Lanthanoid Ions and a Dithienylethene Ligand Showing Slow Relaxation of the Magnetization
1D Chains of Lanthanoid Ions and a Dithienylethene Ligand Showing Slow Relaxation of the Magnetization
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DOI：
10.3390/magnetochemistry2020021
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发表时间：
2016-03
期刊：
影响因子：
2.7
通讯作者：
Mudasir A. Yatoo;Goulven Cosquer;M. Morimoto;M. Irie;B. Breedlove;M. Yamashita
中科院分区：
文献类型：
--
作者：
Mudasir A. Yatoo;Goulven Cosquer;M. Morimoto;M. Irie;B. Breedlove;M. Yamashita
合成了3个同结构的一维稀土配合物{[Ln 2（DTE）（H-DTE）（MeOH）2]·2 H2O}n（Ln = Tb，Dy，Yb; DTE = 1，2-双（5-羧基-2-甲基-3-噻吩基）全氟环戊烯）。在一维链状结构中，镧系离子为七配位，具有帽状三角棱柱结构。1，2-双（5-羧基-2-甲基-3-噻吩基）全氟环戊烯（DTE）配体在配合物中呈平行构型，导致配体光异构化能力的丧失。根据磁性测量，每个复合物在直流场中通过多个过程经历磁化的缓慢弛豫。
Three isostructural 1D lanthanoid complexes with the general formula {[Ln2(DTE)(H-DTE)(MeOH)2]·2H2O}n (Ln = Tb, Dy, and Yb; DTE = 1,2-bis(5-carboxyl-2-methyl-3-thienyl) perfluorocyclopentene) were synthesized. In the 1D chain structure of each complex, lanthanide ions are seven coordinate with a capped trigonal prism geometry. The 1,2-bis(5-carboxyl-2-methyl-3-thienyl) perfluorocyclopentene (DTE) ligand adopts a parallel configuration in these complexes, which results in the loss of the photo-isomerization ability of the ligand. From magnetic measurements, each complex undergoes slow relaxation of the magnetization via multiple processes in a dc field.