高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (12): 1809.

• 研究快报 • 上一篇    下一篇

高氯酸锂与4-叔丁基苯并-15-冠-5配合物的远红外位移

台夕市, 方胜强   

  1. 兰州大学化学化工学院, 兰州 730000
  • 收稿日期:2000-06-02 出版日期:2000-12-24 发布日期:2000-12-24
  • 通讯作者: 方胜强(1938年出生),男,教授,从事同位素化学研究.

Far Infrared Shift of Lithium Perchlorate Complex with4-tert-Butylbenzo-15-crown-5

TAI Xi-Shi, FANG Sheng-Qiang   

  1. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
  • Received:2000-06-02 Online:2000-12-24 Published:2000-12-24

关键词: 4-叔丁基苯并-15-冠-5, 高氯酸锂-[4-叔丁基苯并-15-冠-5]配合物, 远红外位移, 锂同位素分离系数的理论计算

Abstract: The solid complex of lithium perchlorate with4-tert butylbenzo-15-crown-5(4-t-BB15C5) has been prepared in iodobenzene.The composition of the solid was determined as Li(4-t-BB15C5)ClO4and its melting point was119_121 ℃. The far IRshift of the complex is obvious.The far IRabsorption band of the complex containing100% 6Li can be found by extrapolation, resolving the difficulty in obtaining a sample of100% 6Li up to now.Arelative reduced partition function ratio, [( s/s′)f ] org, being1.045 is calculated.Since the [ (s/s′)f ] aqof lithium perchlorate in solid state had been obtained as1.025and may act as that in aqueous phase, the phase equilibrium separation factor α may be obtained as 1.019 by the quotient of 1.045/1.025 for the extractive system of (4-t-BB15C5) C6H5I/LiClO4H2oThe value of α is just equal to the value of intrinsic separation factor (1+εp) described previously

Key words: 4-tert Butylbenzo-15-crown-5, Complex of lithium perchlorate with 4-tert-butylbenzo-15-crown-5, Far infrared shift, Theoretical calculation of separation factor of lithium isotope

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