Voltammetric characterization of trans-dioxo ethylenediamine complexes of Re(V) in aqueous solutions.

MARTINS MARÍA ELISA; E MÉNDEZ,; CF ZINOLA,; MF CERDÁ,; CASTRO LUNA, AM

JOURNAL OF COLLOID AND INTERFACE SCIENCE

ACADEMIC PRESS

Lugar: Estados Unidos; Año: 2001 vol. 236 p. 104 - 107

0021-9797

The electrochemical behavior of trans-[Re(V)O2(en)2]I and trans-[Re(V)O2 (en)2]ClO4 (en D ethylenediamine) complexes was studied by cyclic voltammetry on Au electrodes. Experiments were performed in aqueous solutions at pH 7.0 and at room temperature. The complex voltammogram was characterized by Re-containing species, assigned to the [Re(V)O2(en)2]C=[Re(IV)O2(en)2] couple, and I-containing species. To overcome I interference, the electrochemical response of Re complexes was segregated by performing a reductive desorption of adsorbed I from Au.   KeyWords: rhenium complexes; cyclic voltammetry; iodine; gold; perchlorate.