氢键型二维网状超分子钴配合物材料的合成、结构及电性能  

Synthesis,Structure and Electrical Properties of Hydrogen-bonded Two-Dimensional Network Supermolecular Cobalt Complex Materials

作　　者：杨芳[1] 刘洋[1,2] 张嫣婕 胡宏志 刘尊奇 YANG Fang;LIU Yang;ZHANG Yan-jie;HU Hong-zhi;LIU Zun-qi(Chemistry and Chemical Engineering College,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Key Laboratory of Agricultural Chemistry and Biomaterials,Urumqi 830052,China)

机构地区：[1]新疆农业大学化学化工学院,乌鲁木齐830052 [2]新疆农业化学与生物材料重点实验室,乌鲁木齐830052

出　　处：《新疆农业大学学报》2022年第5期408-417,共10页Journal of Xinjiang Agricultural University

基　　金：新疆维吾尔自治区自然科学基金面上项目(2022D01A76);新疆农业化学与生物材料重点实验室开放课题基金资助项目(KF202206);国家自然科学基金项目(21561030);新疆“天山英才计划”项目;新疆维吾尔自治区研究生科研创新项目(XJ2022G142);新疆农业大学大学生创新项目。

摘　　要：采取蒸发法以2-氨基吡啶、六水合氯化钴为原料,在甲醇、乙腈和水的混合溶剂中获得了一种新型有机-无机杂化超分子钴配合物材料[C_(5)H_(7)N_(2)]_(2)[CoCl_(4)](化合物1)。通过变温红外光谱、单晶X-射线衍射、粉末X-射线衍射、热重分析、介电常数和电化学(循环伏安CV曲线)对其晶体结构和电性能进行表征。结果显示,化合物1在低温(100 K)和室温(293 K)下均属单斜晶系,在空间结构内通过氢键相互作用形成二维网状超分子结构。变温红外在250 K附近呈现明显的吡啶环骨架吸收峰变动,与化合物1在250 K附近的明显可逆介电异常一致,其循环伏安测试显示化合物1具有良好电子转移性能。In this project,a novel organic-inorganic hybrid supermolecular cobalt complex material[C_(5)H_(7)N_(2)]_(2)[CoCl_(4)](compound 1)was successfully synthesized in a mixture of methanol,acetonitrile and water by solvent evaporation method using CoCl_(2)·6H_(2)O and 2-aminopyridine as raw materials.Crystal structure,thermal and electrical properties were tested using variable temperature infrared spectroscopy,single crystal X-ray diffraction,powder X-ray diffraction,thermogravimetry analysis,dielectric constant tests and electrochemistry.Single crystal X-ray diffraction analysis showed that compound 1 was both monoclinic at 100 K and 293 K.The two-dimensional network supramolecular structure was formed by hydrogen-bonded interaction within the spatial structure.Using variable temperature infrared spectroscopy,it was presented that the change of pyridine ring skeleton absorption peaked at near 250 K,which was consistent with the reversible dielectric anomaly of compound 1 near 250 K.Cyclic voltammetry showed that compound 1 had good electron transfer properties.

关 键 词：超分子材料 变温红外 氢键 介电性质 电化学 

分 类 号：O614[理学—无机化学]