Zn(Ⅱ)与5-氨基四氮唑和1,4-对苯二甲酸配位聚合物的溶剂可控合成

doi:10.7503/cjcu20130716

摘要/Abstract

摘要：

以5-氨基四氮唑（HATz）、1，4-对苯二甲酸（H₂BDC）和Zn（NO₃）₂为反应物，在水热条件下得到了1个二维层结构的Zn（Ⅱ）配位聚合物{[Zn₂（ATz）₂（BDC）（H₂O）₂] ·H₂O}_n（1），而在N，N’-二甲基甲酰胺（DMF）溶剂热条件下得到了1个三维结构的Zn（Ⅱ）配位聚合物{[Zn₂（ATz）₂（BDC）（DMF）₂] }_n（2）. 通过元素分析、红外光谱、单晶X射线衍射和粉末X射线衍射等对它们的组成和结构进行了表征. 单晶结构分析结果表明，配合物1是以Zn（Ⅱ）离子作连接点、μ₂-ATz^-和μ₂-BDC^2-作连接子形成的3-连接（6，3）蜂窝型二维层结构，二维层之间再通过氢键作用形成三维超分子结构. 配合物2是以两羧基桥连的双核Zn（Ⅱ）单元[Zn₂（CO）₂] 作连接点、μ₂-ATz^-和μ₄-BDC^2-作连接子形成的6-连接简单立方格子的三维金属-有机框架结构. 室温固体荧光实验表明，在350 nm的光激发下，配合物1和2分别在451和466 nm处出现强烈的荧光发射.

关键词: 金属-有机配位聚合物, 5-氨基四氮唑, 1,4-对苯二甲酸, 荧光性质

Abstract:

The hydrothermal reaction of 5-amino-tetrazole(HATz) and 1,4-benzenedicarboxylic acid(H₂BDC) with Zn(NO₃)₂ gave a new coordination polymer {[Zn₂(ATz)₂(BDC)(H₂O)₂] ·H₂O}_n(1), and when this reaction was carried out under N,N'-dimethylformamide(DMF) solvothermal condition, another new coordination polymer {[Zn₂(ATz)₂(BDC)(DMF)₂] }_n(2) was obtained. Complexes 1 and 2 were characterized by elemental analyses, infrared spectroscopy, single-crystal X-ray diffraction, and powder X-ray diffraction. Complex 1 exhibits a 2D 3-connected(6,3) honeycomb(hcb) network with the Zn(Ⅱ) ions as 3-connected nodes, and the μ₂-ATz^- and μ₂-BDC^2- ligands as linkers, and then strong hydrogen bonding interactions extend the 2D layers into 3D supramolecular framework. While, complex 2 possesses a 3D 6-connected primitive cubic(pcu) metal-organic framework with the binuclear Zn(Ⅱ) units [Zn₂(CO)₂] as 6-connected nodes, and the μ₂-ATz^- and μ₄-BDC^2- ligands as linkers. Furthermore, their thermal stabilities and photoluminescence at room temperature in solid state were also investigated.

Key words: Metal-organic coordination polymer, 5-Amino-tetrazole, 1,4-Benzenedicarboxylic acid, Fluorescence property

中图分类号:

O614

TrendMD:

卢文贯, 刘宏文, 殷旭光, 蓝路梅, 刘海瑶. Zn(Ⅱ)与5-氨基四氮唑和1,4-对苯二甲酸配位聚合物的溶剂可控合成. 高等学校化学学报, 2013, 34(12): 2691.

LU Wen-Guan, LIU Hong-Wen, YIN Xu-Guang, LAN Lu-Mei, LIU Hai-Yao. Diverse Structures of Two Zn(Ⅱ) Coordination Polymers with 5-Amino-tetrazolate and 1,4-Benzenedicarboxylate Tuned by Solvent System. Chem. J. Chinese Universities, 2013, 34(12): 2691.

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