Extraction of sodium picrate into nitrobenzene in the presence of dicyclohexyl-18-crown-6

被引：0
作者：
E. Makrlík
P. Vaňura
机构：
[1] Charles University,Faculty of Education
[2] Prague Institute of Chemical Technology,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 1997年 / 223卷
关键词：
Sodium; Physical Chemistry; Inorganic Chemistry; Stability Constant; Nitrobenzene;
D O I：
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学科分类号：
摘要：
From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium Na+(aq)+A−(aq)+L(nb)⇆NaL+(nb)+A−(nb) taking place in the two-phase water-nitrobenzene system (A−=picrate, L= dicyclohexyl-18-crown-6; aq-aqueous phase, nb=nitrobenzene phase) was evaluated as logKex(NaL+, A−)=2.6.Further, the stability constant of the dicyclohexyl-18-crown-6-sodium complex in nitrobenzene saturated with water was calculated: αnb(NaL+)=7.8.
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页码：229 / 231
页数：2
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