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化学学报
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化学学报 ›› 2008, Vol. 66 ›› Issue (12): 1446-1450. 上一篇    下一篇

研究论文

双酚大环配体硝酸铕三元配合物的合成、晶体结构与荧光性质

胡学雷*,a,b 陈 中a 邱 立a 刘 波b
赵元弟b 潘志权a 罗勤慧c   

  1. (a武汉工程大学绿色化工过程省部共建教育部重点实验室 湖北省新型反应器与绿色化学工艺重点实验室
    武汉 430073)
    (b华中科技大学教育部生物医学光子学重点实验室 武汉 430074)
    (c南京大学配位化学国家重点实验室 南京 210008)
  • 投稿日期:2007-10-08 修回日期:2008-01-14 发布日期:2008-06-28
  • 通讯作者: 胡学雷

Synthesis, Crystal Structure and Luminescent Property of a Europium Nitrate Ternary Complex with a Diphenol Macrocyclic Ligand

HU, Xue-Lei *,a,b CHEN, Zhong a QIU, Lia LIU, Bo b
ZHAO, Yuan-Di b PAN, Zhi-Quan a LUO, Qin-Hui c   

  1. (a Key Laboratory for Green Chemical Process of Ministry of Education-Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073)
    (b Key Laboratory of Biomedical Photonics of Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074)
    (c State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210008)
  • Received:2007-10-08 Revised:2008-01-14 Published:2008-06-28
  • Contact: HU, Xue-Lei

PDF

693

被引次数

17

在硝酸铕模板下用丙二胺和2,6-二甲酰基-4-甲基苯酚通过[2＋2]缩合反应, 合成了一个新的双酚亚胺大环配体硝酸铕三元配合物[Eu(H2L)(NO3)3] (L表示大环配体), 并进行了系统的物理表征. 晶体结构研究表明: 配合物为中性分子, 由一个Eu3＋, 一个中性大环配体(H2L)和三个配位硝酸根组成. 晶体结构属单斜晶系, P21/c 空间群, 晶胞参数a＝1.57296(11) nm, b＝0.96957(7) nm, c＝1.91196(13) nm, β＝104.445(1)°, V＝2.8237(3) nm3, Z＝4, R＝0.0507, wR＝0.1168, Eu3＋为10配位, 呈扭曲的双冠四方反棱柱配位构型. 在低温下(77 K), 配合物在甲醇溶液中以紫外光激发产生了Eu3＋离子特征的荧光发射.

关键词: 双酚大环配体, 硝酸铕三元配合物, 合成, 晶体结构, 荧光性质

A new ternary complex of europium nitrate [Eu(H2L)(NO3)3] (L denotes the macrocyclic ligand) with a diphenol macrocyclic ligand has been synthesized by [2＋2] condensation of 1,3-propyldiamine with 2,6-diformyl-4-methylphenol in the presence of europium nitrate, and systematically characterized by physical methods. The study of X-ray analysis shows that the complex is neutral molecule and composed of a enropium ion, a nertral macrocyclic ligand and three coordinated nitrates. The crystal crystallizes in the monoclinic system, space group P21/c with a＝1.57296(11) nm, b＝0.96957 (7) nm, c＝1.91196(13) nm, β＝104.445(1)°, V＝2.8237(3) nm3, Z＝4, R＝0.0507, and wR＝0.1168. The central ion Eu3＋ is ten-coordinated in the coordination geometry of a distorted bicapped square-antiprism. At 77 K, excitation of the title complex in methanol solution give rise to the characteristic emissions of the Eu3＋ ion.

Key words: diphenol macrocyclic ligand, europium nitrate ternary complex, synthesis, crystal structure, luminescent property