Electrochemical properties of Cu4[PhN3C6H4N3(H)Ph]4(μ-O)2, a tetranuclear Copper(II) complex with 1-phenyltriazenido-2-phenyltriazene-benzene as ligand

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Published: Sep 29, 2008
DOI: https://doi.org/10.26850/1678-4618eqj.v33.3.2008.p43-46
Keywords:
copper(II) complex, 1,2-bis(phenyltriazene)benzene ligand, spectroelectrochemical characterization, electrochemical sensor, oxygen reduction

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Alessandro Hermann
Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Departamento de Biologia e Química, Ijuí, Brasil.
Lucinei Stechmann da Silva
Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Departamento de Biologia e Química, Ijuí, Brasil.
Carlos Roberto de Menezes Peixoto
Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Departamento de Biologia e Química, Ijuí, Brasil.
Adriano Bof de Oliveira
Universidade Federal de Santa Maria, Departamento de Química, Santa Maria, Brasil.
Jairo Bordinhão
Universidade Federal do Rio de Janeiro, Instituto de Química, Rio de Janeiro, Brasil.
Manfredo Hörner
Universidade Federal de Santa Maria, Departamento de Química, Santa Maria, Brasil.
https://orcid.org/0000-0002-1683-1998

Abstract

Bis-(μ2-oxo)-tetrakis{[1-feniltriazene-1,3-diil)-2-(phenyltriazenil)benzene copper(II) is a tetranuclear complex which shows four Cu(II) ions coordinated by four 1,2-bis(phenyltriazene)benzene bridged ligands, with one diazoaminic deprotonated chain, and two O2- ligands. The complex reduces at E1/2 = -0.95 V vs Fc+/Fc, a two electrons process. Cyclic voltammetric and spectroelectrochemical studies showed a reversible process. When immobilized on carbon paste electrode, the complex electrocatalyses the reduction of O2 dissolved on aqueous solution at –0.3 V vs SCE potential. The obtained current shows linearity with O2 concentration.

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Hermann, A., da Silva, L. S., Peixoto, C. R. de M., de Oliveira, A. B., Bordinhão, J., & Hörner, M. (2008). Electrochemical properties of Cu4[PhN3C6H4N3(H)Ph]4(μ-O)2, a tetranuclear Copper(II) complex with 1-phenyltriazenido-2-phenyltriazene-benzene as ligand. Eclética Química, 33(3), 43–46. https://doi.org/10.26850/1678-4618eqj.v33.3.2008.p43-46
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Vol. 33 No. 3 (2008): Eclética Química
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Original articles
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