Synthesis, structure, and electrochemical properties of a sandwich-type {Co6}-cluster-added germanotungstate
Zhengzheng LIU, Pengyun ZHANG, Chengri WANG, Shengli HUANG, Guoyu YANG
【无机化学学报】doi: 10.11862/CJIC.20240039
A new sandwich-type {Co6}-added polyoxotungstate, [Co(dien)2]{[Co(dien)(H2O)]2[Co(dien)]2[Co6(en)2(μ3-OH)2(H2O)6(GeW8O31)2]}·5.5H2O (1), where dien=diethylenetriamine and en=ethylenediamine, was synthesized via hydrothermal reaction. The polyoxoanion of compound 1 was constructed by a belt-like {Co6} cluster core sandwiched by two {GeW8} units. 1 was characterized by single crystal X-ray diffraction, element analysis, IR spectroscopy, powder X-ray diffraction (PXRD), and thermogravimetric analysis (TGA) experiments, respectively. The electrochemical properties of 1 were explored by the cyclic voltammetry (CV) technique, and 1 exhibited excellent electrocatalytic activity in nitrite reduction.
关键词: polyoxometalate, co-added polyoxotungstate, sandwich-type structure, hydrothermal synthesis, reduction of nitrite
基于2,5-二溴对苯二羧酸配体的镧系金属有机骨架的合成、结构及性质
罗小玲, 邹品田, 王小燕, 刘峥, 孔翔飞, 唐群, 王胜
【无机化学学报】doi: 10.11862/CJIC.20230271
采用溶剂热法,以2,5-二溴对苯二甲酸(H2L)为配体,分别与六水合硝酸钕、六水合硝酸钆反应合成了2种镧系金属有机骨架(MOFs):{[Nd2(L)3(DMF)2(H2O)2]·2DMF}n (1)和{[Gd2(L)3(DMF)2(H2O)2]·2DMF}n (2)。通过单晶X射线衍射、粉末X射线衍射、红外光谱、元素分析、荧光光谱、热重分析等测试方法对其进行了结构表征与性质研究。结果表明,2个配合物均是以稀土离子为金属节点,与配体相互连接,形成无限延伸的三维网状结构。
关键词: 镧系, 2,5-二溴对苯二甲酸, 金属有机骨架, 晶体结构

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