Homo- and heteroleptic cobalt(II) and nickel(II) complexes with nitrilotriacetic and dibasic carboxylic acids

被引：3
|
作者：
Kornev, V. I. [1 ]
Semenova, M. G. [1 ]
Merkulov, D. A. [1 ]
机构：
[1] Udmurt State Univ, Izhevsk 426034, Russia
来源：
RUSSIAN JOURNAL OF COORDINATION CHEMISTRY | 2009年 / 35卷 / 07期
关键词：
SOLVENT-EXTRACTION; DISSOCIATION-CONSTANTS; STABILITY-CONSTANTS; SECONDARY LIGANDS; SUCCINIC ACID; OXALATE IONS; ASSOCIATION; THIOSULFATE; ELECTRODE; KOMPLEXE;
D O I：
10.1134/S1070328409070094
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Equilibria in binary and ternary systems containing cobalt(II) and nickel(II) salts, nitrilotriacetic acid, and dicarboxylates were studied by spectrophotometry with NaClO 4 as a supporting electrolyte (I = 0.1) at T = 20 +/- 2A degrees C. The molar and proton compositions of the complexes and the pH ranges of their existence were determined. The stability constants of the homo- and heteroleptic complexes were calculated. The pH-distribution of the detected complexes was obtained. The experimental data were processed in terms of the mathematical models that predict the existence of a wide spectrum of complex species in solution and allow ignoring those species that are negligible for accurate reproduction of the observed pattern.
引用
收藏
页码：519 / 525
页数：7
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