吉林大学学报(理学版) ›› 2020, Vol. 58 ›› Issue (4): 1015-1019.

• 化学 • 上一篇    下一篇

含有金属水链的3,5-吡唑二甲酸铜配位聚合物的合成及热稳定性

苏丽娟,   张晓宇, 周瑞莎   

  1. 中北大学 理学院化学系, 太原 030051
  • 收稿日期:2020-01-08 出版日期:2020-07-26 发布日期:2020-07-16
  • 通讯作者: 周瑞莎 E-mail:rszhou0713@nuc.edu.cn

Synthesis and Thermal Stability of a Copper 3,5PyrazoleDicarboxylate Coordination PolymerContaining MetalWater Chain

SU Lijuan, ZHANG Xiaoyu, ZHOU Ruisha   

  1. Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China
  • Received:2020-01-08 Online:2020-07-26 Published:2020-07-16
  • Contact: ZHOU Ruisha E-mail:rszhou0713@nuc.edu.cn

摘要: 在乙腈和水的混合体系中,将硝酸铜和3,5-吡唑二甲酸(H-3pdc)于120 ℃反应72 h, 得到蓝色晶体, 该化合物分子式为{[Cu3(pdc)2(H2O)7]·2H2O}n. 通过元素分析、 红外光谱分析、 粉末X射线衍射及单晶X射线衍射对该化合物的结构进行表征, 并研究其热稳定性. 结果表明, 3个铜离子和2个pdc3-形成中性分子Cu3(pdc)2, 水分子作为桥联配体连接Cu3(pdc)2形成一维折叠链, 通过氢键作用, 一维链连接形成三维超分子网络, Cu2+的配位水分子与晶格水分子通过氢键作用形成了一维金属水链.

关键词: 配位聚合物, 晶体结构, 溶剂热, 3,5吡唑二甲酸

Abstract: The 3,5dicarboxy1Hpyrazole reacted with Cu(NO3)2 in the mixed CH3CN/H2O solvents at 120 ℃ for 72 h, and blue crystals were obtained. The molecular formula of the compound was {[Cu3(pdc)2(H2O)7]·2H2O}n. The compound was characterized by elemental analysis, IR spectrum, single-crystal X-ray diffraction, powder Xray diffraction and thermal analysis. The results show that three Cu2+ ions and two pdc3- anions interconnect to form the neutral molecule Cu3(pdc)2, which is further joined to form a onedimensional (1D) puckered chain by coordinated H2O molecule as bridging ligand, then 1D chains are further joined into a three-dimensional supramolecular network through hydrogen bonding. The coordinated H2O molecules of Cu2+ ions and lattice H2O molecules form one-dimensional metal-water chain through hydrogen bonding.

Key words: coordination polymer, crystal structure, solvo-thermal, 3,5dicarboxy1Hpyrazole

中图分类号: 

  • O629.74