Spectrophotometric determination of acidity constants of some recently synthesized anthraquinones in methanol plus water

被引：59

作者：

Almasifar, D

Forghaniha, A

Khojasteh, Z

Ghasemi, J

Sharghi, H

Shamsipur, M

机构：

[1] RAZI UNIV,DEPT CHEM,KHORRAMSHAHR,IRAN

[2] SHIRAZ UNIV,DEPT CHEM,SHIRAZ,IRAN

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1997年 / 42卷 / 06期

关键词：

D O I：

10.1021/je970091o

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The acidity constants of 14 recently synthesized derivatives of 9,10-anthraquinone in methanol + water at 25 degrees C and an ionic strength of 0.1 M have been determined spectrophotometrically. A linear inverse relationship between the pK(a) of all acids and the mole fraction of methanol in the solvent mixtures is observed. The influence of substituents in the molecular structure on the ionization constants is discussed.

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页码：1212 / 1215

页数：4

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