SOLVENT EFFECTS ON THE DISSOCIATION OF ALIPHATIC CARBOXYLIC-ACIDS IN WATER-N,N-DIMETHYLFORMAMIDE MIXTURES - CORRELATION BETWEEN ACIDITY CONSTANTS AND SOLVATOCHROMIC PARAMETERS

被引：51
|
作者：
SINDREU, RJ
MOYA, ML
BURGOS, FS
GONZALEZ, AG
机构：
[1] UNIV SEVILLE,DEPT ANALYT CHEM,E-41012 SEVILLE,SPAIN
[2] UNIV SEVILLE,DEPT PHYS CHEM,E-41012 SEVILLE,SPAIN
来源：
JOURNAL OF SOLUTION CHEMISTRY | 1994年 / 23卷 / 10期
关键词：
BINARY MIXTURES; N; N-DIMETHYLFORMAMIDE WATER; SOLVATOCHROMIC PARAMETERS; ACIDITY CONSTANTS; FACTOR ANALYSIS;
D O I：
10.1007/BF00976259
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：
The acid dissociation constants of nine aliphatic carboxylic acids in several N,N-dimethylformamide-water mixtures were subjected to factor analysis (FA) and two solvent factors emerged. A further target factor analysis (TFA) indicated that the Kamlet and Taft general equation is reduced in these mixtures to two terms: the independent one and that related to the hydrogen bond acceptor (HBA) basicity beta solvatochromic parameter. Accordingly, an excellent correlation is found between the logarithmic values of the acidity constants of each acid in the binary mixtures and their corresponding beta values.
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页码：1101 / 1109
页数：9
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