双螺旋状异金属3-4簇合物LnCo
Double-Propeller-like Heterometallic 3-4 Clusters LnCo.
作者信息
Lun Hui-Jie, Du Ming-Hao, Wang Dong-Hui, Kong Xiang-Jian, Long La-Sheng, Zheng Lan-Sun
机构信息
Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
出版信息
Inorg Chem. 2020 Jun 15;59(12):7900-7904. doi: 10.1021/acs.inorgchem.0c00613. Epub 2020 Jun 4.
Two high-nuclearity lanthanide-transition metal clusters with the general formula [LnCoCo(OH)(CO)(CHCHCOO)(dea)(HO)]·(NO)·Cl·(CHCHOH)·(HO) (, Ln Gd () and Dy ()) have been obtained by reacting CoCl·6HO, Ln(NO)·6HO, and a mixture of ligands consisting of propionate and diethanolamine (Hdea). Crystal structural analysis exhibits two three-blade propellers composed of the CoLn units connected by one Co ion and three CO ions, which assemble into a double-propeller-like structure (). Magnetocaloric effect (MCE) studies indicate that exhibits a large entropy change (-Δ) of 36.9 J kg K.
通过使CoCl₂·6H₂O、Ln(NO₃)₃·6H₂O与由丙酸盐和二乙醇胺（Hdea）组成的配体混合物反应，得到了两个通式为[LnCo₂(OH)(CO)(CH₂CH₂COO)(dea)(H₂O)]·(NO₃)·Cl·(CH₂CH₂OH)·(H₂O)（Ln = Gd (III)和Dy (III)）的高核镧系 - 过渡金属簇合物。晶体结构分析显示，由CoLn单元组成的两个三叶螺旋桨通过一个Co离子和三个CO离子相连，组装成类似双螺旋桨的结构。磁热效应（MCE）研究表明，其展现出36.9 J kg⁻¹ K⁻¹的大熵变（-ΔS）。
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