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Synthesis, Structures, and Magnetic Properties of Zigzag Tetranuclear Lanthanide Complexes
Zeitschrift für anorganische und allgemeine Chemie ( IF 1.1 ) Pub Date : 2020-07-29 , DOI: 10.1002/zaac.202000235
Xiang Li 1 , Yuhan Liu 1 , Xiao-Wei Chi 1 , Guang-Zhou Zhu 1 , Feng Gao 1
Affiliation  

Five isostructural tetranuclear lanthanide complexes with the general formula [Ln4(teaH2)2(teaH)2(NO3)6]·2CH3OH [Ln3+ = Dy3+ (1), Tb3+ (2), Ho3+ (3), Er3+ (4), and Gd3+ (5)] were successfully synthesized by the reaction of various lanthanide nitrate and triethanolamine (teaH3) ligand. Single crystal X‐ray analyses reveal the eight‐coordinate Ln3+ centers adopt a slightly distorted triangular dodecahedron geometry and nine‐coordinate Ln3+ ions own an approximately capped square antiprism environment in similar zigzag Ln4 core. Magnetic studies demonstrate the presence of anitferromagnetic interactions between Ln3+ centers without obvious SMM behavior.

中文翻译:

锯齿形四核镧系元素络合物的合成,结构和磁性

五个具有通式[Ln 4(teaH 22(teaH)2(NO 36 ] · 2CH 3 OH [Ln 3+ = Dy 3+1),Tb 3+2), Ho 3+3),Er 3+4)和Gd 3+5)]是通过硝酸镧系元素与三乙醇胺(teaH 3)配体。单晶X射线分析显示,八坐标Ln 3+中心采用稍微扭曲的三角十二面体几何形状,而九坐标Ln 3+离子在类似之字形Ln4核中拥有近似加盖的正方形反棱镜环境。磁性研究表明,Ln 3+中心之间存在反铁磁相互作用,而没有明显的SMM行为。
更新日期:2020-07-29
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