有机胺配体构筑的Keggin型多酸的超分子化合物的合合成成、结构和催化性能

Keggin type polyoxometalate-based supramolecular compounds constructed by organic amine ligands:synthesis,structure and catalytic properties

选用配体双-(2-氨基-乙基)-(2-[1,2,4]三氮唑-4-yl-乙基)-胺(Btla),通过水热法合成了一例新型的基于Keggin型多金属氧酸盐的超分子化合物,[(Btla)2(PMo12O40)]·3H2O(1).利用单晶X-射线衍射,元素分析和红外光谱对化合物1的结构进行了表征.化合物1的结构包含一个Keggin型{PMo12O40}^4-多酸阴离子、两个游离的Blta配体和三个游离水.化合物1的超分子一维链通过多酸阴离子的端氧O34和相邻多酸阴离子上的桥氧O40的氢键作用以及配体上N原子之间的氢键作用相互连接形成.配体上氨基提供的N12和多酸阴离子的端氧O38与桥氧O2之间通过氢键连接形成二维超分子框架.同时进一步探究了该超分子化合物在光催化与电化学方面的应用特性.

A novel Keggin type polyoxometalate-based supramolecular compound[(Btla)2(PMo12O40]·3H2O(1)constructed by the Organic Amine ligand bis-(2-amino-ethyl)-(2-[1,2,4]triazole-4-yl-ethyl)-amine(Btla)was synthesized by hydrothermal method.The structure of compound 1 was characterized by single crystal X-ray diffraction and infrared spectroscopy.The structure of compound 1 contains a Keggin type{PMo12O40}^4-anion,two uncoordinated Blta ligands and three free water.The supramolecular one-dimensional chain of compound 1 connected not only by the hydrogen bonding between the terminal oxygen O34 of the{PMo12O40}^4-anion and the bridging oxygen O40 of the adjacent{PMo12O40}^4-anion,but also by the hydrogen bonding of the N atoms on the ligand.The N12 provided by the amino group on the ligand and the terminal oxygen O38 and the bridging oxygen O2 ofthe{PMo12O40}^4-anion are connected by hydrogen bonding to form a two-dimensional supramolecular framework.This work was also further investigated the application characteristics of this supramolecular compound in photocatalysis and electrochemistry.