Stability constants of mixed-ligand cobalt(II) complexes with pyridinedicarboxylic acids and small bioligands studied by potentiometric measurements

被引：0

作者：

Ramirez, Asxel ^{[1
]}

Araujo, Mary Lorena ^{[2
]}

Del Carpio, Edgar ^{[3
]}

Hernandez, Lino ^{[1
]}

Lubes, Vito ^{[1
]}

机构：

[1] Univ Simon Bolivar USB, Dept Quim, Apartado 89000, Caracas 1080, Venezuela

[2] Univ Cent Venezuela UCV, Escuela Quim, Fac Ciencias, Ctr Equilibrios Soluc, Caracas, Venezuela

[3] Univ Cent Venezuela UCV, Escuela Dr Jesus Maria Bianco, Fac Farm, Unidad Quim Med, Caracas, Venezuela

来源：

JOURNAL OF COORDINATION CHEMISTRY | 2024年 / 77卷 / 17-19期

关键词：

Ternary complexes; cobalt(II); pyridinedicarboxylic ligands; bioligands; EQUILIBRIA; SPECIATION;

D O I：

10.1080/00958972.2024.2406317

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this work, we have studied the stability constants of ternary cobalt(II) complexes with the primary ligands: pyridine-2,3-dicarboxylic acid (H(2)2,3-Dipic, H2L) and pyridine-3,4-dicarboxylic acid (H(2)3,4-Dipic, H2L) and secondary ligands representing low molecular mass components of blood serum: lactic acid (HLac), oxalic acid (H(2)Ox), citric acid (H(3)Cit), and phosphoric acid (H3PO4). Potentiometric data were analyzed using the least squares computational program LETAGROP. Ionic strength and temperature were both kept constant using 1.0 mol dm(-3) NaNO3 as ionic medium at 25 degrees C. Species distribution diagrams were generated to determine the speciation variations with respect to pH. [GRAPHICS] .

引用

页码：2241 / 2251

页数：11

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