Thermodynamic and spectroscopic studies of Cu(II) and Ni(II) complexes with a new proline-threonine dipeptide ligand

被引：6

作者：

Boudesocque, Stephanie ^{[1
,2
]}

Damaj, Ziad ^{[1
]}

Dupont, Laurent ^{[1
]}

Behr, Jean-Bernard ^{[3
]}

Guillon, Emmanuel ^{[1
,2
]}

机构：

[1] Univ Reims, GRECI, F-51687 Reims 2, France

[2] ESIEC, F-51686 Reims, France

[3] UFR Sci, CNRS, UMR 6519, Lab React Select & Applicat, F-51687 Reims 2, France

来源：

JOURNAL OF INORGANIC BIOCHEMISTRY | 2008年 / 102卷 / 07期

关键词：

copper(II) and nickel(II) complexes; dipeptide; UV-vis spectrophotometry; EPR; potentiometry;

D O I：

10.1016/j.jinorgbio.2008.01.021

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The interactions between a new proline-threonine dipeptide ligand with two metallic cations were investigated in aqueous solution. The metallic cations studied were the copper(II) and the nickel(II), which are involved in many biological processes. The combination of potentiometry, UV-visible spectrophotometry, EPR, and mass spectrometry was used to determine the formation constants of the complexes and their structure in solution. The complexation sites were identified using electronic absorption and EPR spectroscopies. Copper complexes were obtained as square planar or square pyramidal mononuclear species, whereas nickel complexes were obtained as dinuclear species with an octahedral geometry. (c) 2008 Elsevier Inc. All rights reserved.

引用

页码：1514 / 1522

页数：9

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