摘要
The solid complex of lithium perchlorate with 4 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)ClO 4 and its melting point was 119121 ℃. The far IR shift of the complex is obvious. The far IR absorption band of the complex containing 100% 6Li can be found by extrapolation, resolving the difficulty in obtaining a sample of 100% 6Li up to now. A relative reduced partition function ratio, [( s/s′)f ] org , being 1.045 is calculated. Since the [ (s/s′)f ] aq of lithium perchlorate in solid state had been obtained as 1.025 and 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) C 6H 5I/LiClO 4 H 2O. The value of α is just equal to the value of intrinsic separation factor (1+ ε p) described previously. [WT5HZ]
The solid complex of lithium perchlorate with 4 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)ClO 4 and its melting point was 119_121 ℃. The far IR shift of the complex is obvious. The far IR absorption band of the complex containing 100% 6Li can be found by extrapolation, resolving the difficulty in obtaining a sample of 100% 6Li up to now. A relative reduced partition function ratio, [( s/s′)f ] org , being 1.045 is calculated. Since the [ (s/s′)f ] aq of lithium perchlorate in solid state had been obtained as 1.025 and 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) C 6H 5I/LiClO 4 H 2O. The value of α is just equal to the value of intrinsic separation factor (1+ ε p) described previously. [WT5HZ]
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第12期1809-1811,共3页
Chemical Journal of Chinese Universities
关键词
高氯酸锂
配合物
远红外位移
苯并冠醚
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