| 配位聚合物[Co(ip)(Eim)2]n的合成和晶体结构(英文) |
| Synthesis and Crystal Structure of Catena-Poly([bis(1-ethyl-1H-imidazole-κN3)cobalt(Ⅱ)]-μ-isophthalato-κ2O∶O′) |
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| 摘要: 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ip2-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 |
| 关键词: 间苯二甲酸配合物 羧酸钴(Ⅱ)盐 晶体结构 循环伏安法 |
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| Abstract: 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(I)], 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. |
| Keywords: isophthalate complex Co(Ⅱ) carboxylate crystal structure cyclic voltammetry |
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| 邓月义,刘法谦,刘保成.配位聚合物[Co(ip)(Eim)2]n的合成和晶体结构(英文)[J].无机化学学报,2009,25(8):1396-1401. |
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