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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Synthesis, Crystal Structure, and Single-Molecule Magnetic Properties of a Salen-type Zn-Dy-Zn Complex
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Synthesis, Crystal Structure, and Single-Molecule Magnetic Properties of a Salen-type Zn-Dy-Zn Complex

机译：Salen型Zn-Dy-Zn配合物的合成，晶体结构和单分子磁性

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摘要

A Salen-type [Salen = N,N'-ethylene bis(salicylideneimine)] mononuclear lanthanide(III)-based Zn-Dy-Zn complex [Dy(ZnL)(2)(CH3COO)Cl-2]center dot CH2Cl2 (1) was prepared [H2L = N,N'-bis(3-ethoxysalicylidene)phenylene-1,2-diamine]. Single-crystal X-ray diffraction analysis revealed that Dy-III was sandwiched between the two ZnL moieties, which was coordinated by three outer OO2 atoms and four inner N2O2 atoms from two Salen-type ligand, respectively, and an oxygen atom of acetic acid molecule completed the eight-coordinate arrangement. The continuous-shape-measures (CShMs) analysis to the Dy-III coordination polyhedron revealed that the coordination environment lies among the ideal spherical triangular dodecahedron (D-2d) and square antiprism (D-4d), respectively, but with relative large deviation parameters. The alternative current (ac) susceptibility measurements shown that it behaved as a field-induced single-molecule magnet with relaxation energy barrier U-eff = 19 K and tau(0) = 1.5 x 10(-5) s.
机译：Salen型[Salen = N，N'-亚乙基双（水杨基亚胺）]单核镧系（III）基Zn-Dy-Zn络合物[Dy（ZnL）（2）（CH3COO）Cl-2]中心点CH2Cl2（制备1）[H 2 L ＝ N，N’-双（3-乙氧基水杨基）亚苯基-1，2-二胺]。 X射线单晶衍射分析表明，Dy-III夹在两个ZnL部分之间，分别由两个Salen型配体的三个外OO2原子和四个内N2O2原子以及一个乙酸氧原子配位分子完成了八坐标排列。对Dy-III配位多面体的连续形状测量（CShMs）分析表明，配位环境分别位于理想的球形三角形十二面体（D-2d）和方形反棱镜（D-4d）之间，但偏差较大参数。交流电（ac）磁化率测量表明，它表现为场感应的单分子磁体，弛豫能垒U-eff = 19 K，tau（0）= 1.5 x 10（-5）s。

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