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化学学报
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化学学报 ›› 1987, Vol. 45 ›› Issue (12): 1199-1203. 上一篇    下一篇

研究论文

稀土(镧、铈)-茜素配位剂双核配合物组成和稳定常数的测定

邹时复;景立新   

  1. 山东大学化学系
  • 发布日期:1987-12-15

Determination of compositions and stability constants of binuclear complex of rare earth(La, Ce) with alizarin complexon

ZOU SHIFU;JING LIXIN   

  • Published:1987-12-15

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研究了茜素配位剂与稀土的二元反应,从La(Ce)-茜素的吸收光谱着手,分析讨论了它们的反应机理,并拟定了一个既可区分单核与多核,又可测定稳定常数的方法.

关键词: 计算, 稳定常数, 稀土金属络合物, 铈络合物, 双核络合物, 镧络合物, 茜素

A new method for the identification of mononuclear and polynuclear complexes was derived based on the classical limiting logarithmic method and mole-ratio method. The method was aoolied to the La-ALC and Ce-ALC systems. Their stability constants of La2(ALC)2 and Ce2(ALC)2 (lg K2,2) are 14.70 and 15.84, resp. These results are in good agreement with those obtained by using the Gonzalez-Garcia's method.

Key words: CALCULATION, STABILITY CONSTANT, RARE EARTH METAL COMPLEX, CERIUM COMPLEX, DINUCLEAR COMPLEX, LANTHANUM COMPLEX, ALIZARINE

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