摘要
在水热条件下,利用单齿氰基化合物3-benzoimidazol-1-ylmethyl-benzonitrile(3-BICN)作为起始配体,借助配体的原位转化合成了含有Keggin型多酸的配合物(3-BIBA)_(4)[PMo_(12)O_(40)]·4H_(2)O(3-BIBA=3-benzoimidazol-1-ylmethyl-benzoic acid).在配合物的结构中,3-BICN原位转化成为了3-BIBA配体,2个3-BIBA配体经一个游离水分子的连接,形成了1个二聚超分子结构单元[(3-BIBA)_(2)H_(2)O],进而与PMo12多酸离子形成1个“卫星”型的超分子结构{(PMo_(12))[(3-BIBA)_(2)(H_(2)O)]_(2)}.苯环与苯环之间的π…π堆积作用,可将这些单元堆积成配合物的二维超分子结构.实验结果表明,具有超分子结构的Keggin型多酸基配合物对有机染料结晶紫(CV)和罗丹明B(RhB)表现出一定的光催化降解作用.
A complex containing Keggin type polyoxometalate,(3-BIBA)_(4)[PMo_(12)O_(40)]·4H_(2)O(3-BIBA=3-benzoimidazol-1-ylmethyl-benzoic acid),was synthesized under hydrothermal conditions by selecting 3-benzoimidazol-1-ylmethyl-benzonitrile(3-BICN)as starting ligand.The 3-BICN ligand was successfully transformed in situ into the 3-BIBA ligand in the structure of the complex.Two 3-BIBA ligands were aggregated by one crystal water molecule to result in dimeric supramolecular unit{(3-BIBA)_(2)H_(2)O},which were further linked by PMo_(12) polyoxoanions into a satellite-like supramolecular unit{(PMo_(12))(3-BIBA)_(4)(H_(2)O)_(2)}.Finally,these units were stacked into a two dimensional supramolecular structure{(PMo_(12))(3-BIBA)_(4)(H_(2)O)_(2)}viaπ…πstacking interaction.The studies on catalytic properties show that the complex has photocatalytic activities toward the degradation of organic dyes crystal violet(CV)and rhodamine B(RhB).
作者
朱烈
李云辉
张桐
马思佳
王祥
ZHU Lie;LI Yunhui;ZHANG Tong;MA Sijia;WANG Xiang(College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, China)
出处
《沈阳大学学报（自然科学版）》
2021年第5期369-373,共5页
Journal of Shenyang University：Natural Science
基金
辽宁省教育厅一般项目(LJ2019004).
关键词
Keggin型多酸
超分子配合物
结构
原位转化
光催化
Keggin polyoxometalate
supramolecular complex
structure
in situ transformation
photocatalytic
