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Mn 2 Cl 4 Cluster Based Two-Dimensional Coordination Polymer for Dichromate Sensing Property
Journal of Cluster Science ( IF 2.8 ) Pub Date : 2020-03-20 , DOI: 10.1007/s10876-020-01781-z
Yuefeng Zhang , Chaowei Zhao , Shengyong You , Jiyong Zou , Nanfu Yan , Jun Zhang , Weiwei Li

The new coordination polymer of {Mn2Cl4(L1)2}n (1, 1′ and 1′′ for different synthesis conditions) [L1 = 1,3,5-tris(4′-pyridyloxadiazole)-2,4,6-triethylbenzene] has been synthesized and characterized by single crystal X-ray diffraction, elemental analysis, infrared spectroscopy and powder X-ray diffraction. As revealed by the single crystal X-ray diffraction, there exist two kinds of L1 ligands and one kind of Mn2Cl4 dimer cluster in complex {Mn2Cl4(L1)2}n. L1 and the Mn2Cl4 dimer form a 3 × 6 two-dimensional layer structure. Each 2D net is composed of Mn2Cl4 linking Mn2-organic cycles. The 2D nets are packed into 3D frameworks through kinds of weak interactions including C-H···N and C-H···Cl hydrogen bonds in the AB fashion. As the assembly reaction can be conducted at room temperature or 90 °C giving rise to 1 and 1′ respectively, the micro-sized products 1′′ can be easily obtained under open solvothermal condition. Finally, the photo-luminescence of the coordination polymer is applied to the harmful dichromate anion sensing in aqueous media. And a fast respond to Cr2O72− at low concentration is realized. The CCDC number of 1 and 1′ are 1977023 and 1977024, respectively.



中文翻译:

Mn 2 Cl 4团簇基二维配位聚合物对重铬酸盐的传感性能

{Mn 2 Cl 4(L1)2 } n(在不同合成条件下分别为1、1'和1'' 的新配位聚合物[ L1  = 1,3,5-tris(4'-吡啶基恶二唑)-2,4合成了[6-6-三乙苯]并通过单晶X射线衍射,元素分析,红外光谱和粉末X射线衍射对其进行了表征。如单晶X射线衍射所揭示,在络合物{Mn 2 Cl 4(L1)2 } n中存在两种L1配体和一种Mn 2 Cl 4二聚体簇。L1与Mn 2 Cl 4二聚体形成3×6的二维层结构。每个二维网络均由连接Mn2-有机循环的Mn 2 Cl 4组成。2D网络通过AB方式的各种弱相互作用(包括CH··N和CH··Cl氢键)被包装到3D框架中。由于组装反应可以在室温或90℃下进行,分别产生11',因此在敞开的溶剂热条件下可以容易地获得微尺寸的产物1'。最后,将配位聚合物的光致发光应用于水性介质中有害的重铬酸盐阴离子感测。快速响应Cr 2 O 7实现了低浓度的2−11'的CCDC编号分别是1977023和1977024。

更新日期:2020-03-20
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