The first quantitative assessment of the individual processes involved in the extraction of alkali-metal picrates by ethyl p-tert-butylcalix(4)arene tetraethanoate in the water-benzonitrile solvent system

被引：0
作者：
deNamor, AFD [1 ]
Velarde, FJS [1 ]
Casal, AR [1 ]
Pugliese, A [1 ]
Goitia, MT [1 ]
Montero, M [1 ]
Lopez, FF [1 ]
机构：
[1] UNIV NACL SUR,DEPT QUIM & INGN QUIM,LAB QUIM ANALIT,RA-8000 BAHIA BLANCA,ARGENTINA
来源：
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1997年 / 93卷 / 22期
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中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Partition and distribution constants of alkali-metal (lithium, sodium, potassium, rubidium) picrates in the water-benzonitrile solvent system and ion-pair formation constants for these electrolytes in the water saturated organic phase at 298.15 K derived from distribution data are reported. Partition data are discussed with respect to transfer data for these electrolytes referred to the process involving the pure solvents. The extraction of alkali-metal picrates from water to benzonitrile by ethyl p-tert-butylcalix(4) arene tetraethanoate is investigated taking into account the extent of ion-pair formation of the alkali-metal complex salt in benzonitrile. A quantitative assessment of the individual processes which contribute to the overall extraction of alkali-metal picrates by the calixarene ester from water to benzonitrile is reported for the fist time.
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页码：3955 / 3959
页数：5
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