EFFECT OF THE SOLVENT ON THE EQUILIBRIA OF ACID-BASE INDICATORS IN APROTIC AND AMPHIPROTIC SOLVENTS

被引：4
|
作者：
BARBOSA, J
BOSCH, CM
SANZNEBOT, V
机构：
[1] Department of Analytical Chemistry, University of Barcelona, Barcelona
来源：
MIKROCHIMICA ACTA | 1992年 / 106卷 / 3-6期
关键词：
INDICATORS; DISSOCIATION CONSTANTS; APROTIC SOLVENTS; AMPHIPROTIC SOLVENTS;
D O I：
10.1007/BF01242105
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The dissociation constants of a series of indicators in N,N-dimethylformamide medium have been determined, and compared with those for the indicators in other aprotic solvents (dimethylsulphoxide and acetonitrile) and in some amphiprotic solvents (water, methanol, ethanol, propan-2-ol and tertbutanol). The effect of the solvent characteristics on the pK values have been evaluated, and the pK + p-gamma(w --> s)t(H+) values shown to be linearly correlated with the Dimroth and Reichardt E(T)N and acceptor number solvatochromic parameters.
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页码：327 / 337
页数：11
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