Acta Chimica Sinica ›› 1996, Vol. 54 ›› Issue (4): 408-412. Previous Articles     Next Articles

Original Articles

一种新的稀土配合物结构分析方法-无顺磁位移混合三稀土法

张善荣;任吉民;裴奉奎   

  1. 中国科学院长春应用化学研究所;中国科学院应用谱学开放实验室
  • 出版日期:1996-04-15 发布日期:1996-04-15

A novel structure analysis method for lanthanide complex none paramagnetic shift tri-lanthanide mixture method

ZHANG SHANRONG;REN JIMIN;PEI FENGKUI   

  • Online:1996-04-15 Published:1996-04-15

A new structure analysis method for lanthanide complexes was proposed, that is, none paramagnetic shift tri-lanthanide mixture method. It was found that the paramagnetic induced shift coul be cancelled by mixing three kinds of paramagnetic lanthanide ions in appropriate proportion. As a result, the chelating sites would be seen simplely from the half widths and the relative distances between lanthanide ion and the ligand nucleus could be calculated from the relaxation time (T1) or the half width. Care should be addressed that the analysis method is suitable for the systems in which intramolecular arrangements and intermolecular ligand exchanges are relatively fast on NMR time scale used.

Key words: PARAMAGNETIC RESONANCE, RARE EARTH METAL COMPLEX, RELAXATION TIME, ALANINE, YTTERBIUM COMPLEX, PRASEODYMIUM COMPLEX, EUROPIUM COMPLEX

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