A potentiometric study of acid-base properties of the (phenol plus phenolate) systems in acetonitrile and, (acetonitrile plus cyclohexane) solvent system

被引：21
|
作者：
Kozak, A [1 ]
Czaja, M [1 ]
Makowski, M [1 ]
Jacewicz, D [1 ]
Dabrowska, A [1 ]
Chmurzynski, L [1 ]
机构：
[1] Univ Gdansk, Dept Gen Chem, PL-80952 Gdansk, Poland
来源：
JOURNAL OF CHEMICAL THERMODYNAMICS | 2003年 / 35卷 / 01期
关键词：
substituted phenols; acid-base equilibria; acetonitrile; acetonitrile-cyclohexanc binary solvent system; potentiometry;
D O I：
10.1016/S0021-9614(02)00323-3
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Acid-base equilibria were studied potentiometrically in (phenol + phenolate) systems involving nine substituted phenols with both electron-donating and electron-accepting substituents in a polar protophobic aprotic solvent, acetonitrile. To estimate the influence of the polarity of the medium on acid dissociation and anionic homoconjugation equilibria, the equilibrium constants were also determined in an (acetonitrile+cyclohexane) solvent in which the latter was a diluent that lowered the dielectric permittivity of the reaction medium, and compared with those determined in acetonitrile. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：77 / 89
页数：13
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