高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (1): 81.

• 论文 • 上一篇    下一篇

水溶液中Ln(Ⅱ)-TTHA络合物的多核NMR研究

华士英, 宋瑞方, 黄桂清   

  1. 吉林大学理论化学研究所, 长春, 130023
  • 收稿日期:1990-09-27 出版日期:1992-01-24 发布日期:1992-01-24
  • 通讯作者: 华士英
  • 基金资助:

    国家自然科学基金

Multinuclear NMR Study of Aqueous Lanthanide-TTHA Complexes

HUA Shi-ying, SONG Rui-fang, HUANG Gui-qing   

  1. Institute of Theoretical Chemistry, Jilin University, Changchun, 130023
  • Received:1990-09-27 Online:1992-01-24 Published:1992-01-24

摘要: 通过对11种镧系-三乙烯四胺六乙酸络合物诱导的23Na、2H、17O和35Cl的化学位移测定,研究了该系列络合物的位移试剂性质。结果表明,轴对称的Ln(TTHA)3-络合物是较好的水溶性位移试剂,尤其是23Na位移与理论偶极位移一致,表明此络合物是最好的正电荷底物之一。

关键词: 镧系离子, 三乙烯四胺六乙酸, 位移试剂, 核磁共振

Abstract: The shift reagent properties of eleven Ln(TTHA)3- complexes were studied on the basis of measuring the chemical shifts of 23Na, 2H, 17O, 35Cl induced by these complexes.The results indicate that the axially symmetric Ln(TTHA)3- complexes are better aqueous shift reagents, especially the shifts of 23Na are consistent with theoretical dipolar shifts, indicating that the Ln(TTHA)3- complexes are the best one for positively charged substrates.

Key words: Lanthanide ions, TTHA, Shift reagent, NMR

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