CAJ | 학술논문

本文用氯化钴、间苯二甲酸钠、1-乙基咪唑在乙醇和水的混合溶剂中反应得到了配位聚合物[Co(ip)(Eim)2]n(其中ip-2为间苯二甲酸二价阴离子,Eim为1-乙基咪唑),用X单晶衍射方法测定了其晶体结构.晶体属单斜晶系.P21/c空间群.配合物结构中含有沿着b轴延伸的"zigzag"链,每个Cu原子分别与2个N原子、2个O原子进行配位,形成了一个扭曲的四面体结构.热重分析表明配合物的分解经历了3个阶段.电化学研究显示配合物中的Co2+/Co3+氧化还原是一个准可逆的过程.
본문용록화고、간분이갑산납、1-을기미서재을순화수적혼합용제중반응득도료배위취합물[Co(ip)(Eim)2]n(기중ip-2위간분이갑산이개음리자,Eim위1-을기미서),용X단정연사방법측정료기정체결구.정체속단사정계.P21/c공간군.배합물결구중함유연착b축연신적"zigzag"련,매개Cu원자분별여2개N원자、2개O원자진행배위,형성료일개뉴곡적사면체결구.열중분석표명배합물적분해경력료3개계단.전화학연구현시배합물중적Co2+/Co3+양화환원시일개준가역적과정.
The reation of CoCl2, disodium isophthalate and Eim in ethanol and distilled water affords coordination polymer [Co(ip)(Eim)2]n (where ip2-=isophthalate dianion, Eim=1-ethyl-1H-imidazole), which has been characterized by X-ray single crystal structure analysis and elemental analysis. It crystallizes in monoclinic system, P21/c space group with the cell parameters of a=1.517 4(3) nm, b=0.966 50(19) nm, c=1.318 3(3) nm,β=104.63(3)°, and V=1.870 7(6) nm3, Z=4, and Dc=1.475 g·cm-3. With 2 711 reflections observed [I>2σ(/)], final R indices are: R1=0.056 9, wR2=0.137 0 while R indices for all data R1=0.071 9, wR2=0.151 7. The structure of the title complex contains polymeric zigzag chains extended along b axis. Each Co (Ⅱ) ion is located at a crystallographic center being coordinated by two N and two O atoms in a distorted tetrahedral geometry. The thermal gravity data indicate the complex undergoes three decomposition stages. The electrochemical studies reveal that redox of Co2+/Co3+ in the complex is a quasi-reversible process. CCDC: 724304.