高等学校化学学报

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (3): 395.

• 论文 • 上一篇    下一篇

高氯酸铊-18冠6-水体系的核磁共振研究

潘桂黄   

  1. 四川大学原子核科学技术研究所
  • 收稿日期:1983-02-18 出版日期:1984-06-24 发布日期:1984-06-24

THALLIUM-205 NUCLEAR MAGNETIC RESONANCE STUDY OF THALLIUM COMPLEX WITH 18-CROWN-6 IN AQUEOUS SOLUTION

Pan Guihuang   

  1. Institute of Nuclear Science and Technology, Sichuan University, Chengdu
  • Received:1983-02-18 Online:1984-06-24 Published:1984-06-24

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摘要： 本文用核磁共振法测定了高氯酸铊-18冠6-水体系的各个热力学参数.该体系的络合稳定常数、热焓、熵和吉氏函数在25.1℃时的数值分别为:lgK=2.11±0.02、△H=-4.49±0.17kcal/mol、△S=-5.35±0.54cal/mol和△G0=-2.88kcal/mol。所得结果与用量热法测得的数值一致。

Abstract: The thermodynamics parameters for the reaction of 18-crown-6 with Tl( I ) in water were determined by using NMR. The stability constant, enthalpy, entropy, and free energy were calculated to be lgK = 2.11 ±0.02, AH = -4.49±0.17 kcal/mol, △S = -5.35 ±0.54 cal/mol and △G0=-2.88 kcal/mol at 25.1℃, respectively. These values were in good agreement with values reported in the literature.

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