Potentiometric and Spectrophotometric Studies on the Binding Ability of a Flexible Tripodal Catecholamine Ligand toward Iron(III)

被引：9

作者：

Sahoo, Suban K. ^{[1
]}

Baral, Minati ^{[2
]}

Kanungo, B. K. ^{[3
]}

机构：

[1] SV Natl Inst Technol SVNIT, Dept Appl Chem, Surat, Gujrat, India

[2] Natl Inst Technol NIT, Dept Chem, Kurukshetra, Haryana, India

[3] St Longowal Inst Engn & Technol SLIET, Dept Chem, Longowal, Punjab, India

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2011年 / 56卷 / 06期

关键词：

EQUILIBRIUM-CONSTANTS; COMPLEXATION; IRON;

D O I：

10.1021/je101338m

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The tripodal catecholamine ligand N-1,N-3,N-5-tris (2-(2,3-dihydroxybenzylamino)ethyl)cyclohexane-1,3,5-tricarboxamide (CYCOENCAT, L) has been synthesized and characterized. The ligand was investigated as a chelator for Fe(III) in an aqueous medium of 0.1 M KCl at (25 +/- 1) degrees C by potentiometric and spectrophotometric methods. Six protonation constants for the ligand were determined and were used as input data to determine the stability constants of the metal complexes. The stability constants for the FeLH3, FeLH2, FeLH, and FeL complexes are reported. The ligand showed the potential to form a tris(catecholate) type complex with a pFe value of 24.76 at pH = 7.4.

引用

页码：2849 / 2855

页数：7

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