| 两个4-连接配位网络的锌(Ⅱ)配位聚合物的合成、结构和荧光性质 |
| Synthesis, Structure and Fluorescent Properties of Two Zn(Ⅱ) Coordination Polymers with 4-Connected Coordination Network |
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| 摘要: 以5-氨基四氮唑(HATz),异烟酸(HPyc)和ZnSO4·7H2O或Zn(NO3)2·6H2O为反应物,在DMF溶剂热条件下分别得到了2个锌(Ⅱ)配位聚合物{[(CH3)2NH2]·[Zn(ATz)(SO4)]}n (1)和{[Zn(ATz)(Pyc)]·0.5DMF}n (2),并对它们的组成和结构进行了表征。配合物1是由4-连接(4,4)网络拓扑的[Zn(ATz)(SO4)]nn-二维阴离子层和[(CH3)2NH2]+阳离子间通过氢键作用形成的二维波浪层结构。配合物2则是1个二重穿插的4-连接金刚烷拓扑的三维微孔金属-有机框架结构,客体DMF分子填充在孔道内。室温下的固体荧光实验表明,在350 nm的光激发下,配合物1和2分别在为445 nm和458 nm处出现强烈的荧光发射。 |
| 关键词: 配位聚合物 5-氨基四氮唑 混合配体 晶体结构 荧光 |
| 基金项目: 国家自然科学基金(No.21071099)和2012年广东省大学生创新训练计划资助项目。 |
| Abstract: Reactions of 5-amino-tetrazole (HATz) and 4-pyridinecarboxylic acid (HPyc) with ZnSO4·7H2O or Zn(NO3)2·6H2O under N,N'-dimethylformamide (DMF) solvothermal condition, yielded two new Zn(Ⅱ) coordination polymers of {[(CH3)2NH2]·[Zn(ATz)(SO4)]}n (1) and {[Zn(ATz)(Pyc)]·0.5DMF}n (2), respectively, which have been structurally characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. The results of structural analysis reveal that complex 1 possesses an 2D undulated layer structure, in which 2D anion (4,4) layer of [Zn(ATz)(SO4)]nn-and [(CH3)2NH2]+ cations are assembled together via strong hydrogen bonding interactions. A remarkable feature of complex 2 is a two-fold interpenetrating 3D microporous metal-organic framework with 4-connected diamondoid topology, in which free DMF molecules locate in the channels. Luminescent properties studies indicate that complexes 1 and 2 exhibit intense fluorescent emissions at λmax=445 nm and 458 nm when excited at 350 nm, respectively, in the solid state at room temperature. CCDC: 921342, 1; 921343, 2. |
| Keywords: coordination polymer 5-amino-tetrazole mixed-ligand crystal structure fluorescence |
| 投稿时间：2013-01-27 修订日期：2013-03-26 |
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| 卢文贯,刘宏文,殷旭光,蓝路梅,刘克美,刘海瑶,黄静,吴琪欣,廖彩兰.两个4-连接配位网络的锌(Ⅱ)配位聚合物的合成、结构和荧光性质[J].无机化学学报,2013,29(7):1433-1441. |
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