高等学校化学学报 ›› 2016, Vol. 37 ›› Issue (9): 1589-1595.doi: 10.7503/cjcu20160289

• 研究论文: 无机化学 • 上一篇    下一篇

溶剂对镍(Ⅱ)金属有机骨架结构的影响

高丽娟, 王莉, 王圣燕, 井淑波()   

  1. 吉林大学化学学院, 长春 130012
  • 收稿日期:2016-04-26 出版日期:2016-09-10 发布日期:2016-08-26
  • 作者简介:联系人简介: 井淑波, 女, 博士, 副教授, 主要从事金属有机骨架的合成及性质研究. E-mail:jingsb@jlu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21171065, 21201077)资助

Influence of Solvent on Structure of Ni(Ⅱ) Metal-organic Frameworks

GAO Lijuan, WANG Li, WANG Shengyan, JING Shubo*()   

  1. College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2016-04-26 Online:2016-09-10 Published:2016-08-26
  • Contact: JING Shubo E-mail:jingsb@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21171065, 21201077)

摘要:

通过乙酸镍和4-咪唑-1-基-苯甲酸(HL)在不同溶剂热条件下合成了3个新型金属有机骨架化合物[Ni(L)2]n·DMF(1), Ni(H2O)2(L)2(2)和Ni(L)2(CH3OH)2(3). 化合物1是用N,N-二甲基甲酰胺(DMF)作为溶剂合成的具有菱形孔道的三维骨架化合物; 化合物2是在DMF/H2O(体积比4:1)中合成的水作为终端配体参与配位的二维层状化合物, 并通过层与层之间的氢键作用构筑形成了三维超分子结构; 当溶剂为甲醇时, 得到了二维层状化合物3, 且甲醇作为终端配体参与配位. 磁学和电化学性质研究结果表明, 化合物1~3中相邻镍离子之间存在反铁磁相互作用; 在一定的电势范围内出现一对明显的Ni(Ⅱ)/Ni(Ⅲ)氧化还原峰, 表明化合物1~3是潜在的磁性材料或电催化剂材料.

关键词: 金属有机骨架, 磁性, 循环伏安法, 溶剂效应

Abstract:

Solvent is an important influence factor in the self-assembly process of metal-organic framworks. In this article, using the semi-rigid 4-imidazol-1-yl-benzoic acid organic ligand(HL) and Ni(OAc)2·4H2O, three novel metal organic frameworks, [Ni(L)2]n·DMF(1), Ni(H2O)2(L)2(2) and Ni(OCH3)2(HL)2(3), were synthesized in different solvents. When the solvent was N,N-dimethyl formamide, compound 1 was synthesized, showing a 3D framework with one dimensional diamond channels. Using DMF/H2O as the solvent, compound 2 was prepared, it exhibits a 2D layer structure with water molecules as terminal ligands, the adjacent layers are linked through hydrogen bonding interactions to form a 3D supramolecular structure. Compound 3 was synthesized in CH3OH, showing a 2D layer structure. Compounds 1—3 display antiferromagnetic property and exhibit a couple of obvious redox peaks in a certain range of potential, respectively.

Key words: Metal-organic framework, Magnetism, Cyclic voltammetry, Solvent effect

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