NUCLEAR MAGNETIC RESONANCE STUDIES OF EDTA IN PRESENCE OF EXCESS CALCIUM OR STRONTIUM

被引：7

作者：

LEYDEN, DE

WHIDBY, JF

机构：

[1] Department of Chemistry, University of Georgia, Athens

来源：

ANALYTICA CHIMICA ACTA | 1968年 / 42卷 / 02期

基金：

美国国家卫生研究院;

关键词：

D O I：

10.1016/S0003-2670(01)80308-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The equilibria which exist between metal ions, ethylenediaminetetraacetic acid (EDTA), and the resulting chelates have been thoroughly investigated by many techniques, emphasis being placed on the study of complexes containing a 1:1 ratio of metal ion to ligand. The results presented here are concerned with the observation of the chemical shift of the nonlabile protons of EDTA when excess calcium or strontium ions are present. The results yield evidence for a 2:1 complex. Formation constants for the equilibria believed to be in effect are given and a possible structure of the 2:1 complex is discussed. © 1968.

引用

页码：271 / &

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[1] *KOMPLEXONE .22. DIE KINETIK DER KOMPLEXBILDUNG - DER AUSTAUSCH DES Y-4 ZWISCHEN CD-+2 UND CU-+2 [J].