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

Chinese Journal of Applied Chemistry ›› 1995, Vol. 0 ›› Issue (3): 13-17.

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

Dong Wenkui¹, Lu Airu², Zhang Lianxiang²

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

Abstract

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

Dong Wenkui, Lu Airu, Zhang Lianxiang. Preparation and Characterization of Complexes of 4'-Bromo-5'-Nitrobenzo-15-Crown-5 with Rare Earth(Ⅲ)[J]. Chinese Journal of Applied Chemistry, 1995, 0(3): 13-17.

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

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