Acta Chimica Sinica ›› 2001, Vol. 59 ›› Issue (5): 701-706. Previous Articles     Next Articles

Original Articles

稀土离子-1,10-菲罗啉桥联胺二元配合物的稳定性研究

汪中明;周志芬;林华宽;徐猛;刘天府;朱守荣;孙宏伟;陈荣悌   

  1. 南开大学化学系.天津(300071)
  • 出版日期:2001-05-15 发布日期:2001-05-15

Studies on the stability of rare earth ion -N,N'-1,10- phenanthroline -2,9-dimethanamine binary complexes

Wang Zhongming;Zhou Zhifen;Lin Huakuan;Xu Meng;Liu Tianfu;Zhu Shourong;Sun Hongwei;Chen Rongti   

  1. Nankai Univ, Dept Chem.Tianjin(300071)
  • Online:2001-05-15 Published:2001-05-15

The stability constants of Lu[Lu=La(Ⅲ), Ce(Ⅲ), Pr(Ⅲ), Nd(Ⅲ), Sm( Ⅲ), Eu(Ⅲ),Gd(Ⅲ), Tb(Ⅲ), Dy(Ⅲ), Ho(Ⅲ),L=N,N'- dialkyl- 1,10- phenanthroline -2,9- dimethanamine, in which alkyl group denotes --- CH~3, CH~2CH~3, -----(CH~2)~2CH~3, ----(CH~2)~3CH~3,----CH(CH~3)~2,---- C(CH~3)~3]binary complexes hace been determined by pH potentiometric titration method at (25±0.1)℃, Ⅰ=0.1mol· dm^-3NaClO~4. The probable structures of the corresponding complexes were proposed. The influence of the metal ions and the substituents on the stability of binary complexes is reported in detail. The stability difference between the complexes of rare earth ion and the corresponding complexes of Cu(Ⅱ) ion is also discussed. The stability constants of the corresponding binary complex of radioactive Pm(Ⅲ) ion are estimated by linear regression.

Key words: PHENANTHROLINE P, RARE EARTH METAL COMPLEX, STABILITY, POLYAMINE

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