波谱学杂志 ›› 1985, Vol. 2 ›› Issue (2): 105-110.

• 研究论文 • 上一篇    下一篇

稀土-苦味酸系列络合物1HNMR研究

毛希安1, 沈联芳1, 倪嘉缵2   

  1. 1. 中国科学院武汉物理研究所;
    2. 中国科学院长春应用化学研究所
  • 收稿日期:1984-12-17 修回日期:1985-02-25 出版日期:1985-06-05 发布日期:2018-01-23

1H NMR STUDY OF RARE-EARTH PICRATE COMPLEXES

Mao Xian1, Shen Lianfang1, Ni Jiazhan2   

  1. 1. Wuhan Institute of Physics, Academia Sinica;
    2. Changchun Institute of Applied Chemistry, Academia
  • Received:1984-12-17 Revised:1985-02-25 Online:1985-06-05 Published:2018-01-23

摘要: 对Ln(pic)3系列络合物(Ln=La,Ce,Pr,Nd,Sm,Eu,Tb,Dy,Ho,Er,Tm,Yb,Pic=picric acid,即苦味酸)进行了NMR研究,测出了1H的顺磁位移,用4f电子云的"四分组规律"对1H位移方向的"四分组效应"作出了解释。本文还讨论了络合物在丙酮溶液中的构型以及稀土络合物的偶极位移机理等问题.

Abstract: Proton paramagnetic shifts of Ln(pic)3 (Ln=rare earth ions except Pin and Gd, pic=picric acid) hare been measured. The shift direction of the whole series shows a "tetrad effect". It can be well explained by the "tetrad rule" of 4f electron clouds. The configuration of Ln(pic)3 complex in acetone solution is discussed. The theory of pseudocontact shift is also discussed.