A new octamolybdate-based metal-organic complex constructed from a 2-pyrazinecarboxylic acid( pzca) has been success-fully synthesized under hydrothermal condition,namely,H3[Cu(pzca)(Mo8O28)0.5(H2O)]·apd·3H2O(1)(apd=aminopyridine) . The elemental analysis,IR spectrum,TG and single crystal X-ray diffraction have been used to characterize the title complex. The title complex is monoclinic system with space group P21/c,whose cell parameters are a=1. 0826(5)nm,b=1. 9099(5)nm,c=1. 2306(10)nm,α=90,β=109. 189(5)°,γ=90,V=2. 4031(16)nm3,Mr=963. 60,Dc=2. 990 g/cm3,Z=4,S=1. 149,F(000)=1989,R1=0. 0319,(R2=0. 1297. Complex 1 exhibits a 3D coordination framework based on the infinite 1D[Cu(pzca)]2n2n+chains and[β-Mo8O28]8-anions with the tetradentate coordination modes,which shows a dinodal 4,4-connected{84. 102}{85. 12}2 topology. In the framework of 1,the lattice water molecules and the non-coordinated apd molecules are existed simultaneously. The title complex modified carbon paste electrode displays the good electrocatalytic activity toward NO2- reduction. Moreover,this com-plex possesses the remarkable photocatalytic ability for the degradation of methylene blue(MB).%水热合成方法制备了一个2-吡嗪羧酸( pzca )修饰的八钼酸盐基金属有机配合物 H3[ Cu ( pzca )(Mo8O28)0．5(H2O)]·apd·3H2O(1)(apd=氨基吡啶),并通过红外光谱、元素分析、热重和X-射线单晶衍射对其结构进行了表征。结构分析表明该配合物属于单斜晶系,P21/c空间群,晶胞参数a=1．0826(5)nm,b=1．9099(5)nm,c=1．2306(10)nm,α=90,β=109．189(5)°,γ=90,V=2．4031(16)nm3,Mr=963．60,Dc=2．990 g/cm3,Z=4,S=1．149,F(000)=1989,R1=0．0319,(R2=0．1297。标题配合物是由一维[Cu(pzca)]2n2n+链和四齿配位模式的[β-Mo8O28]8-阴离子连接形成的三维骨架结构,展示出一种双节点4,4-连接{84．102}{85．12}2拓扑,结晶水和氨基吡啶分子填充在三维骨架中。标题配合物修饰的碳糊电极对NO2–有好的电催化还原活性,此外配合物作为催化剂对亚甲基蓝的降解有显著的催化效果。
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