Chinese Journal of Magnetic Resonance ›› 1985, Vol. 2 ›› Issue (2): 105-110.

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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 Published:1985-06-05 Online:2018-01-23

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.