A new organic-inorganic hybrid [W5O18]-based TM-Ln heterometallic isopolyoxotungstate [Cu(en)2(H2O)]4[Ce(W5O18)2]·4H2O (1) (Ln =lanthanide, TM =transition metal, en =1,2-ethylenediamine) has been prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, elemental analysis, powder X-ray diffraction as well as thermogravimetric analysis.Compound 1 belongs to Monoclinic and P21/c space group, and the cell parameters are a =2.736 1(2) nm, b =1.452 52(7) nm, c =1.634 53(9) nm, β =97.153(6)°.The Structural analysis shows that CeⅣ cation coordinated with O atoms from two [W5O18]6-units, forming distorted square antiprism geometry, and was defined by copper-en cations.Notably, compound 1 represents the first discrete W5O18-containing TM-Ln heterometallic isopolyoxotungstate.%在水热条件下, 成功合成了一例新的异金属修饰的有机-无机杂化型多金属同多酸簇合物[Cu(en)2(H2O)]4[Ce(W5O18)2]·4H2O (1) (en =乙二胺), 采用X射线单晶衍射、元素分析、X射线粉末衍射及热重分析对化合物进行了结构分析和基本表征.化合物1属于单斜晶系, P21/c空间群, 单胞参数为a =2.736 1(2) nm, b =1.452 52(7) nm, c =1.634 53(9) nm, β =97.153(6)°.结构解析表明, 化合物1中的中心离子Ce4+与两个同多酸簇块的O原子结合形成八配位的四方反棱柱体, 并通过游离的及支撑的[Cu(en)2(H2O)]2+进行修饰.值得注意的是, 化合物1是首例基于{W5O18}型同多酸簇块的Cu-Ce异金属修饰型有机-无机杂化的孤立结构.
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