高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (8): 1496.

• 研究论文 • 上一篇    下一篇

3,5-吡啶二羧酸镍配位聚合物的合成与晶体结构

金强1, 赵娇2, 石鑫1   

  1. 1. 辽宁师范大学化学化工学院功能材料化学研究所, 大连 116029;
    2. 中国科学院大连化学物理研究所催化基础国家重点实验室, 大连 116023
  • 收稿日期:2010-02-01 出版日期:2010-08-10 发布日期:2010-08-10
  • 通讯作者: 石鑫, 女, 博士, 副教授, 主要从事有机-无机杂化材料研究. E-mail: xinshi@lnnu.edu.cn

Synthesis and Crystal Structure of Nickle 3,5-Pyridinedicarboxylates

JIN Qiang1, ZHAO Jiao2, SHI Xin1*   

  1. 1. Institute of Chemistry for Functionalized Materials, Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China;
     2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2010-02-01 Online:2010-08-10 Published:2010-08-10
  • Contact: SHI Xin. E-mail: xinshi@lnnu.edu.cn

摘要:

采用水热法合成了3个新的3,5-吡啶二羧酸镍配位聚合物[Ni(3,5-Pydc)(H2O)4·H2O]n(1), [Ni2(3,5-Pydc)2(H2O)8·(H2O)2]n(2)和[Ni(3,5-Pydc)(H2O)2]n(3), 并通过X射线单晶衍射、FTIR及热重分析对其结构和组成进行了表征. 单晶衍射结果表明, 化合物12是一维折线型链状结构, 而化合物3是二维层状结构. 化合物1是由3,5-Pydc配体将中心镍离子连接起来形成的折线型一维链. 在化合物2中存在着两条各自独立的折线型一维链, 但它们的配位方式却完全相同, 每一条链都是由3,5-Pydc配体将镍离子连接而成. 而化合物3则是由3个镍离子和3个3,5-Pydc配体形成的二十元环构成的二维网格. 3个化合物分别通过链间或层间氢键作用(O—H…O)形成三维超分子结构, 化合物12中的客体水分子被氢键限域在超分子结构之中.

关键词: 配位聚合物; 3,5-吡啶二羧酸; 晶体结构

Abstract:

Three new nickle 3,5-pyridinedicarboxylates coordination polymers, [Ni(3,5-Pydc)(H2O)4·H2O]n(1), [Ni2(3,5-Pydc)2(H2O)8·(H2O)2]n(2) and [Ni(3,5-Pydc)(H2O)2]n(3) were synthesized by hydrothermal method and characterized by single-crystal X-ray diffraction, FTIR and TGA. X-ray crystallography reveals that both complexes 1 and 2 are 1D zigzag chains, while complex 3 is a 2D layered network. In complex 1, 3,5-Pydc ligand links two different Ni(Ⅱ) into 1D zigzag chain. There are two independent 1D zigzag chains with same coordination mode in complex 2 and each zigzag chain is formed by 3,5-Pydc ligand connecting with Ni(Ⅱ). Complex 3 is a 2D network constructed by twenty-membered rings comprising three Ni(Ⅱ) and three 3,5-Pydc ligands. Furthermore, three compounds form 3D supramolecular frameworks through O—H…O hydrogen bonds among chains or layers. The guest water molecules are defined in supramolecular frameworks of complexes 1 and 2.

Key words: Coordination polymer; 3,5-Pyridinedicarboxylic acid; Crystal structure

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