{Co_(6)}簇加成的夹心型锗钨酸盐的合成、结构及电化学性质  

Synthesis,structure,and electrochemical properties of a sandwich-type{Co_(6)}-cluster-added germanotungstate

作　　者：刘峥峥 张朋蕴 汪承日 黄胜利 杨国昱 LIU Zhengzheng;ZHANG Pengyun;WANG Chengri;HUANG Shengli;YANG Guoyu(MOE Key Laboratory of Cluster Science,School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 102488,China)

机构地区：[1]北京理工大学化学与化工学院,原子分子簇科学教育部重点实验室,北京102488

出　　处：《无机化学学报》2024年第6期1173-1179,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21831001,21971011)资助。

摘　　要：通过水热反应合成了一个{Co_(6)}簇加成的夹心型锗钨酸盐:[Co(dien)_(2)]{[Co(dien)(H_(2)O)]_(2)[Co(dien)]_(2)[Co_(6)(en)_(2)(μ_(3)-OH)_(2)(H_(2)O)_(6)(GeW_(8)O_(31))_(2)]}·5.5H_(2)O(1),其中dien=diethylenetriamine,en=ethylenediamine。该化合物的阴离子是一个带状{Co_(6)}簇夹心的三明治型{Co_(6)}@{GeW8}2结构。通过单晶X射线衍射、元素分析、红外光谱、粉末X射线衍射和热重实验对该化合物进行了系统性地表征。通过循环伏安测试研究了该化合物的电化学性质,同时其在电催化还原亚硝酸盐实验中展现出良好的催化活性。A new sandwich-type{Co_(6)}-added polyoxotungstate,[Co(dien)_(2)]{[Co(dien)(H_(2)O)]_(2)[Co(dien)]_(2)[Co_(6)(en)_(2)(μ_(3)-OH)_(2)(H_(2)O)_(6)(GeW_(8)O_(31))_(2)]}·5.5H_(2)O(1),where dien=diethylenetriamine and en=ethylenediamine,was synthesized via hydrothermal reaction.The polyoxoanion of compound 1 was constructed by a belt-like{Co_(6)}cluster core sandwiched by two{GeW8}units.1 was characterized by single crystal X-ray diffraction,element analysis,IR spectroscopy,pow-der 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.CCDC:2270995.

关 键 词：多金属氧酸盐 钴加成的多钨酸盐 夹心型结构 水热合成 亚硝酸盐还原 

分 类 号：O614.812[理学—无机化学] O614.431[理学—化学] O614.613