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https://repositorio.ufba.br/handle/ri/7557
metadata.dc.type: | Artigo de Periódico |
Título : | Synthesis, characterization and kinetic studies of the cis-[RuCl2(cyclen)]+ complex |
Otros títulos : | Inorganica Chimica Acta |
Autor : | Ferreira, Kleber Queiroz Lucchese, Angélica Maria Rocha, Zênis Novais da Silva, Roberto Santana da |
metadata.dc.creator: | Ferreira, Kleber Queiroz Lucchese, Angélica Maria Rocha, Zênis Novais da Silva, Roberto Santana da |
Resumen : | We report here the synthesis, characterization and kinetic studies of cis-[RuCl2(cyclen)]+ in aqueous solution, where cyclen is the macrocyclic ligand 1,4,7,10-tetraazacyclododecane. The complex releases one Cl− producing cis-[RuCl(OH)(cyclen)]+ in aqueous solution at pH 4.60. The product of this reaction was characterized by Ultraviolet–Visible (UV–Vis) spectrum in comparison to the synthesized cis-[RuCl(OH)(cyclen)](BF4)·2H2O. The electrochemical data showed that Epc of the Ru(III/II) peak increases as the macrocycle ring size decreases and also when the trans conformation is changed to cis. The chloride affinity of Ru(III) depends on the macrocycle ring size since cis-[RuCl2(cyclam)]+ (cyclam=1,4,8,11-tetraazacyclotetradecane) does not release chloride for at least 12 h. The overall effect between cyclam and cyclen reflects the fact that the electron involved in the reduction enters a nonbonding π-d orbital and its energy is affected by the macrocyclic ligand. |
Palabras clave : | Cyclen Macrocyclic ruthenium complexes Base hydrolysis |
URI : | http://www.repositorio.ufba.br/ri/handle/ri/7557 |
Fecha de publicación : | 30-ene-2002 |
Aparece en las colecciones: | Artigo Publicado em Periódico (Química) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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1-s2.0-S0020169301007253-main.pdf Restricted Access | 204,83 kB | Adobe PDF | Visualizar/Abrir Request a copy |
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