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Registro Completo

Escolher formato: Padrão Ficha Formato Reduzido Nomes MARC Campos MARC
No. Registro   001191044
Cód. publicação   Link10.1590/s0103-50532001000200018 DOI
Entrada Principal   LinkRocha, Reginaldo C. (*)
Título   LinkRuthenium and iron complexes with benzotriazole and benzimidazole derivatives as simple models for proton-coupled electron transfer systems.
Imprenta   São Paulo, 2001.
Descrição   p. 234-242.
Idioma   Inglês
Autor Secundário   LinkRein, Francisca Natalina (*)
  LinkToma, Henrique Eisi https://orcid.org/0000-0002-4044-391X
Fonte   LinkIn: Journal of the Brazilian Chemical Society, São Paulo, v. 12, n. 2, p. 234-242, 2001, ISSN: 0103-5053
Localiz.Eletrônica   e-mail do autor -- mailto://henetoma@iq.usp.br
Localiz.Eletrônica    "Clicar" sobre o botão para acesso ao texto completo 
Resumo/Outros   Iron and ruthenium complexes of the type `[M-LH] POT.n´ (where M = `Ru POT. II,III´(N`H IND.3´) IND.5 POT.2+,3+´, `Ru POT.II,III´`(edta) POT. 2-,- [edta = ethylenedinitrilotetraacetate], or `Fe POT.II,III´`(CN) IND.5 POT.3-,2-´ and LH = benzotriazole or benzimidazole) were prepared and characterized in aqueous solutions by means of electrochemical and spectroelectrochemical methods. Special emphasis was given to the pH-dependent redox processes, exhibited by all the investigated complexes. From their related Pourbaix diagrams, which displayed a typically Nernstian behavior, the p`K IND.a´ and formal reduction potential values were extracted. In addition, these `E IND.1/2´ versus pH curves were also used to illustrate the partitioning relationship concerning the redox and acid-base species, and their interconversion equilibria. The active area in which the dependence of the `M POT. III´/`M POT.II´ couple on the pH takes place, as delimited by p`K IND.a POT.III´ and p`K IND.a POT. II´, was taken into account in order to evaluate the usefulness of such simple complexes as models for proton-coupled electron transfer (PCET). The results were interpreted in terms of the acceptor/donor electronic character of the ligands and `sigma´,`pi´-metal-ligand interactions in both redox states of the metal ion

Escolher formato: Padrão Ficha Formato Reduzido Nomes MARC Campos MARC

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