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出 处:《渤海大学学报(自然科学版)》2017年第1期61-65,共5页Journal of Bohai University:Natural Science Edition
基 金:国家自然科学基金项目(No:21501013)
摘 要:选择4-氨基-1,2,4-三氮唑(L)、钼酸钠和氯化锌为原料在水热条件下自组装,制备得到了一种新的八钼酸盐基锌配合物材料[Zn(L)_2(Mo_8O_(26))_(0.5)(H_2O)_2]·3H_2O,并通过红外光谱、X-射线粉末衍射和单晶X-射线衍射对其结构进行了表征.结构解析表明锌配合物分子式为C_4H_(19)Mo_4N_8O_(18)Zn,M_r=916.40,晶系三斜,空间群P 1,V=1.14105(10)nm^3,a=1.04158(5)nm,b=1.11066(6)nm,c=1.23860(7)nm,α=68.8370(10)°,β=66.5730(10)°,γ=62.8290(10)°,Z=2,Rint=0.0205,Dc=2.656g/cm^3,μ=3.270 mm^(-1),F(000)=874,R=0.0303,wR=0.1066.结构解析证明,标题锌配合物是包含一维聚合物链的三维超分子结构,结构中存在的连接L配体和[Mo_8O_(26)]^(4-)阴离子的氢键对最终三维超分子网络的形成起到重要的作用.锌配合物修饰的碳糊电极(1-CPE)展示出[Mo_8O_(26)]^(4-)阴离子的特征氧化还原峰,而且此配合物在紫外光下展示出良好的催化降解亚甲基蓝活性.The assembly of the raw materials of 4- amino- 1,2,4 -triazole, ammonium heptamolybdate and zinc chloride under the hydrothermal condition, a new octamolybdate - based zinc complex [ Zn (L)2( Mo8 026 ) 0 5 (H20) 2 ]· 3H2O (L = 4- amino- 1,2,4- triazole) was obtained. IR spectrum, powdered X- ray diffraction and single crystal X -ray diffraction were used to characterize the zinc complex. Single crystal X - indicates that this complex belongs to triclinic system with space group, C4H19Mo4NsO18Zn, Mr = ray diffraction 916.40, V= 1. 14105(10) nm3, a = 1. 04158(5) nm, b = 1. 11066(6) nm, c = 1. 23860(7) nm, a =68. 8370(10) °,β = 66. 5730 (10) °, γ= 62. 8290 (10) °, Z = 2, Rint = 0. 0205, Dc = 2. 656 g/cm3, μ = 3. 270 mm-1, F(000) = 874, R = 0. 0303, wR = 0. 1066. The zinc complex is a three - dimensional supramolecular structure containing the one - dimensional [ Zn (L) 2 ( Mo8 026 ) o. 5 ( H2 O) 2 J polymeric chain, in which the hydrogen - bonding interactions between the [ MosO26 ] 4- anions and L ligands play the important role in constructing the final supramolecular network. The carbon paste electrode modified by the zinc complex ( 1 - CPE) shows the good electrocatalytic ability to reduce NO2 - anion. The title complex displays the photocatalytic activities towards the degradation of methylene blue under UV irradiation.
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