以Keggin型磷钼酸阴离子为模板的超分子化合物的合成与表征  

An Interesting 2D-Infinite Water Layers{(H_2O)_(30)}_n in a New Keggin POMs∶3H_3[PMo_(12)O_(40)]·6C_3N_6H_6·31H_2O

作　　者：黄绍春[1] 刘利[1] 张昀[1] 

机构地区：[1]华侨大学材料物理化学研究所,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2014年第6期675-679,共5页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(50971063);福建省自然科学基金资助项目(2003F006;2010J01042)

摘　　要：采用溶液法合成一个捕获二维无限水层的多酸杂化化合物3H3[PMo12O40]·6C3N6H6·31H2O.X射线单晶衍射表明:标题化合物属于三方晶系,空间群为P-3;其晶胞参数a=1.754 0(9)nm,b=1.754 0(9)nm,c=1.330 5(3)nm,α=90°,β=90°,γ=120°,V=3.545 3(4)nm3.该化合物中的Keggin型多酸阴离子作为模板诱导了水簇形成,搭构成一个二维水层{(H2O)30}n,三氨基三嗪填充孔洞后增强了水簇的稳定性.热失重分析和循环伏安测试结果表明:标题化合物具有较好的热稳定性和优良的氧化还原性能.An polyoxometalates （POMs）compound 3H3 [PMo12O40]· 6MA· 31H2O （1）（MA=Melamine）has been synthesized by solution evaporation method,which can trapped an infinite 2D water layers.X-ray single-crystal diffraction analysis revealed that the title compound crystallized in the trigonal system P-3 space group with a = 1.7540（9）nm,b=1.7540（9）nm,c= 1.3305（3）nm,α = 90°,β = 90°,γ = 120°,V= 3.545 3（4）nm3 .The structure of the 2D-infi-nite water layers {（H2 O）30 }n was induced by the template effect of the Keggin-type POMs anion.The MA molecules fill-ing in the pores enhanced the stability of the water layers.Thermogravimetric,and electrochemical studies have been car-ried out.The results showed that title compound have good thermal stability and electrochemical properties.

关 键 词：超分子化合物 水簇 多酸阴离子 三氨基三嗪 KEGGIN结构 

分 类 号：O641.4[理学—物理化学]