Acid-base and complexation properties of gem-diphosphonic and gem-diphosphinic acids in aqueous; solutions and micellar media of surfactants

被引：9
|
作者：
Loginova, LP
Levin, IV
Matveeva, AG
Pisareva, SA
Nifant'ev, EE
机构：
[1] Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia
[2] Kharkov Natl Univ, Dept Chem, UA-61077 Kharkov, Ukraine
来源：
RUSSIAN CHEMICAL BULLETIN | 2004年 / 53卷 / 09期
关键词：
gem-diphosphonic acids; gem-diphosphinic acids; dissociation constants; complexation; micelles; surfactants; potentiometry;
D O I：
10.1007/s11172-005-0062-5
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Acid-base and complexation properties of gem-disubstituted phosphorus acids, viz., methylenediphosphonic, 1-Hydroxyethylidene-1,1-diphosphinic, P,P'-diphenylmethylene-diphosphinic, and P,P'-diphenyl-1-hydroxyethylidene-1,1-diphosphinic acids, were studied in aqueous solutions and in the presence of biomimetics (micelles of ionic surfactants). The dissociation constants of the acids and stability constants of complexes with magnesium(II) and copper(II) ions were determined in aqueous solutions and microheterogeneous media containing sodium dodecyl sulfate, cetylpyridinium chloride, or cetylpyridinium nitrate (ionic strength 0.1 mol L-1, temperature 25 degrees C).
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收藏
页码：2000 / 2007
页数：8
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