INIFTA   05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
On the nature of the redox species in (CH3)2N(C6H4)-CO2-Re(CO)3(1,10-phenanthroline): a spectroelectrochemistry, pulse radiolysis and flash photolysis study
Autor/es:
M. P. JULIARENA, G. T. RUIZ, R. O. LEZNA , M. R. FÉLIZ, G. FERRAUDI AND E. WOLCAN.
Revista:
POLYHEDRON
Editorial:
Elsevier Ltd.
Referencias:
Año: 2008 vol. 27 p. 1471 - 1478
ISSN:
0277-5387
Resumen:
The UV–Vis absorption spectra of 4-dimethylaminobenzyl radical cation (DMAB.+) and 1,10-phenanthroline radical anion (phen.-) were obtained by spectroelectrochemistry, flash photolysis and pulse radiolysis experiments on DMAB–CO2–ReI(CO)3(phen) and DMAB–COOH. DMAB–CO2–ReI(CO)3(phen) was shown to have remarkable reversibly/stable redox processes under electrochemical perturbations. An excellent agreement was observed between the spectrum of the radical cation DMAB.+ obtained electrochemically and radiolytically. The in situ UV–Vis spectrum of the electrochemically reduced radical anions, phen.-, was compared with that obtained from the products of the reductive quenching of the corresponding photochemically excited states. Besides, the oxidative quenching of the ReI complex excited states by [NiII(Me6[14]-aneN4)] showed the formation of [(DMAB.+–CO2)–ReI(CO)3(phen)] as the main primary product.