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化学学报
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化学学报 ›› 2012, Vol. 70 ›› Issue (03): 303-310.DOI: 10.6023/A1106044 上一篇    下一篇

研究论文

含氟二羧酸和含氮配体与过渡金属(Ⅱ)配合物的合成、表征及晶体结构

蒋勇, 邱晓, 李夏   

  1. 首都师范大学化学系 北京 100048
  • 投稿日期:2011-06-04 修回日期:2011-09-05 发布日期:2011-10-19
  • 通讯作者: 李夏 E-mail:xiali@mail.cnu.edu.cn
  • 基金资助:

    国家自然科学基金(No. 21071101)资助项目.

Fluorinated Dicarboxylic Acids and Transition-metal(Ⅱ) Complexes with N-ligands: Synthesis, Characterizations and Crystal Structures

Jiang Yong, Qiu Xiao, Li Xia   

  1. Department of Chemistry, Capital Normal University, Beijing 100048
  • Received:2011-06-04 Revised:2011-09-05 Published:2011-10-19
  • Supported by:

    This work is supported by the National Natural Science Foundation of China (No. 21071101).

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11 | 3

水热法合成了5 个新的配位聚合物: [Cd(TFSA)(2,2'-bpy)2]n (1), [Mn(HFGA)(phen)2]n (2), [Co(TFSA)(bpp)2(H2O)2]n (3), [Zn(TFSA)(bpp)2(H2O)2]n (4)和[Cu(HFGA)(phen)]n (5) (TFSA＝四氟丁二酸, HFGA＝六氟戊二酸, 2,2'-bpy＝2,2'-联吡啶, phen＝1,10-邻菲啰啉, bpp＝1,3-二吡啶基丙烷), 通过X 射线单晶衍射确定了配合物的晶体结构. 配合物1 和2 具有相似的1D 链结构, 四氟丁二酸和六氟戊二酸以两个单齿羧基氧原子分别配位于Cd2+和Mn2+离子, 2,2'-联吡啶和1,10-邻菲啰啉分别螯合配位于Cd2+和Mn2+离子. 配合物3 和4 具有相似的1D 链结构, 1,3-二吡啶基丙烷以两个端基氮原子桥联金属离子, 四氟丁二酸和六氟戊二酸分别以单齿方式配位. 配合物5 是具有{4.82}拓扑的2D 网结构, 六氟丁二酸配体通过单齿/双齿-桥联模式连接Cu2+离子. 5 个配合物均通过分子间弱作用进一步构筑成3D 超分子结构.

关键词: 过渡金属配合物, 四氟丁二酸, 六氟戊二酸, 含氮配体, 晶体结构

Five new coordination polymers [Cd(TFSA)(2,2'-bpy)2]n (1), [Mn(HFGA)(phen)2]n (2), [Co(TFSA)(bpp)2(H2O)2]n (3), [Zn(TFSA)(bpp)2(H2O)2]n (4) and [Cu(HFGA)(phen)]n (5) (TFSA＝tetrafluorosuccinate, HFGA＝hexafluoroglutarate, 2,2'-bpy＝2,2'-bipyridine, phen＝1,10-phenanthroline, bpp＝ 1,3-bis(4-pyridyl)propane) have been synthesized and structurally characterized by X-ray single crystal diffraction. The complexes 1 and 2 have similar 1D chain structures, in which adjacent Cd2+ and Mn2+ ions are linked by TFSA and HFGA ligands using its two monodentate carboxylate groups, while 2,2'-bipy and phen act as terminal ligands to chelate the Cd2+ and Mn2+ ion, respectively. The complexes 3 and 4 have similar 1D chain structures, in which adjacent metal ions Co2+ or Zn2+ are linked by bpp ligands using its two N atoms, while TFSA and HFGA act as terminal ligands using one carboxylate oxygen atom to coordinate the metal(Ⅱ) ion. Complex 5 has a 2D network structure with the topology of {4.82}, in which the neighbouring Cu2+ ions are connected through HFGA ligands using a monodantate/bidentate-bridging mode. All of five complexes are further connected by hydrogen bonds and π-π stacking interactions into 3D supramolecular structures.

Key words: transition-metal complex, tetrafluorosuccinate, hexafluoroglutarate, N-ligand, crystal structure