以5-(3-吡啶基)-1H-吡唑-3-羧酸为配体的钴共晶配合物的合成、晶体结构及电化学性质

A cobalt co-crystal complex based on 5-(3-pyridyl)-1H-pyrazole-3-carboxylic acid:Synthesis,crystal structure and electrochemical property

采用溶剂热法合成了一种新型的钴基配合物,即{[Co(Hppc)2][CO_(2)(4,4′-bipy)(H_(2)O)_(4)](SO_(4))_(2)·2H_(2)O}_(n)(1),其中H_(2)ppc=5-(3-吡啶基)-1H-吡唑-3-羧酸,4,4′-bipy=4,4′-联吡啶。配体H_(2)ppc是由吡啶环、吡唑环和羧基共同组成,同时兼具了刚性和柔性。通过单晶X射线衍射对配合物1进行了结构测定。结果显示所合成的配合物1结晶在单斜晶系C2/c空间群,包括2个晶体学独立部分:二维层状[Co(Hppc)_(2)]和一维链状[CO_(2)(4,4′-bipy)(H_(2)O)_(4)]^(2-),并形成具有{4^(4)·6^(2)}{4}_(2)拓扑网络结构的共晶化合物。此外,配合物1呈现出良好的电化学发光(ECL)性能以及良好的超级电容器性能。

A new cobalt-based complex,namely{[Co(Hppc)2][CO_(2)(4,4′-bipy)(H_(2)O)_(4)](SO_(4))2·2H_(2)O}n(1)where H_(2)ppc=5-(3-pyridyl)-1H-pyrazole-3-carboxylic acid and 4,4′-bipy=4,4′-bipyridine,was synthesized by solvothermal meth-od.The ligand H_(2)ppc is constituted by a pyridine ring,pyrazole ring,and carboxyl group,which possesses rigidity and flexibility.Complex 1 was structurally determined by single-crystal X-ray diffraction and displays that the com-plex crystallizes in the C2/c pace group,monoclinic system.Complex 1 includes two crystallographic independent parts which are 2D layered[Co(Hppc)2]and 1D chain like[CO_(2)(4,4′-bipy)(H_(2)O)_(4)]2-forming a co-crystal structure with a{4^(4)·6^(2)}{4}_(2)topological network.Furthermore,complex 1 exhibits good electrochemiluminescence(ECL)per-formance and supercapacitive performance.CCDC:2255080.