中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (3): 13-17.

• 研究论文 • 上一篇    下一篇

稀土(Ⅲ)(4'-溴-5'-硝基苯并-15-冠-5)配合物的制备与表征

董文魁1, 卢爱茹2, 张联祥2   

  1. 1. 兰州铁道学院环境工程系, 兰州 730070;
    2. 西北师范大学化学系, 兰州
  • 收稿日期:1994-09-15 修回日期:1994-12-13 出版日期:1995-06-10 发布日期:1995-06-10

Preparation and Characterization of Complexes of 4'-Bromo-5'-Nitrobenzo-15-Crown-5 with Rare Earth(Ⅲ)

Dong Wenkui1, Lu Airu2, Zhang Lianxiang2   

  1. 1. Department of Environmental Engineering, Lanzhou Railway Institute Lanzhou 730070;
    2. Depadment of Chemistry, Northwestern Normal University, Lanzhou
  • Received:1994-09-15 Revised:1994-12-13 Published:1995-06-10 Online:1995-06-10

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摘要： 在乙腈和丙酮介质中合成了6种轻稀土硝酸盐与4'-溴-5'-硝基苯并-15-冠-5(L)的固体配合物,经元素分析确定其组成为RE(NO3)3·L(RE=-La～Nd),Sm(NO3)3·L·H2O和Eu(NO3)3·L·CH3CN·4H2O,并进行了IR、UV、TG-DTA、摩尔电导及X-射线粉末衍射物相分析等表征,探讨了冠醚苯基上引入双取代基(-Br,-NO2)后对稀土离子配位作用的影响.

关键词: 轻稀土硝酸盐, 冠醚配合物, 溴硝基苯并冠醚, 制备

Abstract: The complexes of 4'-bromo-5'-nitrobenzo-15-crown-5(L)3 with rare earth havebeen synthesized and characterized by elemental analysis, IR, UV, TG-DTA, molar conduc-tance and X-ray powder diffration analyses.The complexes have compositions of RE(NO3)3·L(RE=La～Nd),Sm(NO3)3·L·H2O and Eu(NO3)3·L·CH3CN·4H2O) respectively with the coordination number of the rare earth cation in the complexes for La,Ce,Pr,andNd being eleven, In the complexes with samarium and europium the crown ethers are coordi-natedvvith Sm3+ or Eu3+ via water molecules.

Key words: light rare earth, crown ether complex, bromonitrobenzo crown, preparation

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