Two tetranuclear Cu 2 Ln 2 (Ln = Dy, Tb) heterometallic complexes: Structure, solution behavior, and magnetic properties
Two tetranuclear Cu 2 Ln 2 (Ln = Dy, Tb) heterometallic complexes: Structure, solution behavior, and magnetic properties
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两种四核 Cu 2 Ln 2 (Ln = Dy, Tb) 异金属配合物:结构、溶液行为和磁性
DOI:
10.1002/aoc.6557
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发表时间:
2021-12
期刊:
影响因子:
--
通讯作者:
Zilu Chen
中科院分区:
文献类型:
--
作者:
Shui Yu;Qian Zhang;Jingru Zhu;Fengli Wei;Dongcheng Liu;Huancheng Hu;Hua-Hong Zou;Yuning Liang;Fu-Pei Liang;Zilu Chen
Two tetranuclear 3d–4f heterometallic complexes [Cu2Ln2(NO3)4(OAc)2L4 (Ln = Dy 1, Tb 2) were obtained under solvothermal reactions of 1-amino-propan-2-ol (HL) with [Cu2(OAc)4(H2O)2 and Ln (NO3)3·5H2O. The structural analyses confirmed a centrosymmetric Z-shaped skeleton for them with the peripheral positions occupied by two Cu (II) ions. The neighboring two lanthanide ions, as well as the neighboring ions of Ln (III) and Cu (II), are all double-bridged through two O atoms. The detailed dynamic magnetic investigation showed slow magnetic relaxation behaviors for both complexes with an energy barrier of 1.35(2) and 2.02(4) K for 1 and 2, respectively. Furthermore, it revealed from the electrospray mass spectrometry (ESI-MS) that complexes 1 and 2 easily undergo dimerization in solution.
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