METAL-CHELATES OF PHOSPHONATE-CONTAINING LIGANDS .1. STABILITY OF SOME N,N,N',N'-ETHYLENEDIAMINETETRA(METHYLENEPHOSPHONIC) ACID METAL-CHELATES

被引：29

作者：

RIZKALLA, EN

ZAKI, MTM

机构：

[1] Department of Chemistry, Ain Shams University, Cairo

来源：

TALANTA | 1979年 / 26卷 / 06期

关键词：

D O I：

10.1016/0039-9140(79)80120-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A potentiometric investigation of the acid dissociation constants of the octabasic ENTMP [N,N,N′,N′-ethylenediaminetetra(methylenephosphonic) acid] is reported. The stability constants of protonated MHnL (n = 1, 2, 3 and 4) and unprotonated ML metal chelates of Mg, Ca, Ba and Cd with ENTMP have been measured. The stabilities are in the order Mg < Ca < Ba < Cd. © 1979.

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页码：507 / 510

页数：4

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