Electrochemistry of copper complexes with polyaza[n]paracyclophanes.: Influence of ATP as an exogen ligand on the relative stability of the Cu(II) and Cu(I) oxidation states

被引：18

作者：

Doménech, A

García-España, E

Luis, SV

Marcelino, V

Miravet, JF

机构：

[1] Univ Valencia, Fac Quim, Dept Quim Analit, E-46100 Valencia, Spain

[2] Univ Valencia, Fac Quim, Dept Quim Inorgan, E-46100 Valencia, Spain

[3] Univ Jaume 1, Lab Quim Organ, Dept Quim Inorgan & Organ, Castellon de La Plana, Spain

来源：

INORGANICA CHIMICA ACTA | 2000年 / 299卷 / 02期

关键词：

electrochemistry; copper complexes; polyaza paracyclophane complexes;

D O I：

10.1016/S0020-1693(99)00506-X

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Interaction of Cu2+ with the macrocycle 2,6,9,13-tetraaza[14]paracyclophane (L) and ATP has been followed by pH-metric titration, cyclic voltammetry and differential pulse voltammetry (DPV). Mixed adduct species with various degrees of protonation were found to be stable for pH > 4. In neutral and alkaline media reduction of mixed complexes occurs in a two-electron quasi-reversible step in contrast with binary Cu2+-L complexes which display two successive one-electron couples. The potentiometric and voltammetric data suggest that in ternary adducts ATP binds to Cu2+ ions through the phosphate chain and one N-site of the adenine ring system. (C) 2000 Elsevier Science S.A. All rights reserved.

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页码：238 / 246

页数：9

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