溶剂对镍(域)金属有机骨架结构的影响 |
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引用本文: | 高丽娟,王莉,王圣燕,井淑波.溶剂对镍(域)金属有机骨架结构的影响[J].高等学校化学学报,2016(9):1589-1595. |
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作者姓名: | 高丽娟 王莉 王圣燕 井淑波 |
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作者单位: | 吉林大学化学学院,长春,130012 |
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基金项目: | 国家自然科学基金(批准号:21171065;21201077)资助. Supported by the National Natural Science Foundation of China(.21171065 |
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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(H2 O)2(L)2(2)和 Ni(L)2(CH3 OH)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。
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关 键 词: | 金属有机骨架 磁性 循环伏安法 溶剂效应 |
Influence of Solvent on Structure of Ni(II) Metal-organic Frameworks |
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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/H2 O 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 CH3 OH, showing a 2D layer structure. Compounds 1—3 display antiferromag-netic property and exhibit a couple of obvious redox peaks in a certain range of potential, respectively. |
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Keywords: | Metal-organic framework Magnetism Cyclic voltammetry Solvent effect |
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