Reduction of mercury(II) by the carbon dioxide radical anion: a theoretical and experimental investigation.

Berkovic, Andrea M; Gonzalez, Mónica C; Russo, Nino; Michelini, María del Carmen; Pis Diez, Reinaldo; Mártire, Daniel O

Berkovic, Andrea M; Gonzalez, Mónica C; Russo, Nino; Michelini, María del Carmen; Pis Diez, Reinaldo; Mártire, Daniel O.

Afiliación

Berkovic AM; Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Casilla de Correo 16, Sucursal 4, 1900 La Plata, Argentina.

J Phys Chem A ; 114(49): 12845-50, 2010 Dec 16.

Article en En | MEDLINE | ID: mdl-21086971

RESUMEN

The laser flash photolysis technique (λ(exc) = 266 nm) was used to investigate the mechanism of the HgCl(2) reduction mediated by CO(2)(·-) radicals in the temperature range 291.7-308.0 K. For this purpose, the CO(2)(·-) radicals were generated by scavenging of sulfate radicals by formic acid. The absorbance of the reduced radical of methyl viologen, a competitive scavenger of CO(2)(·-), was monitored at 390 nm. Moreover, theoretical calculations, including solvent effects, were also performed within the framework of the density functional theory for various chemical species of Hg(I) and Hg(II) to aid in the modeling of the reaction of reduction of HgCl(2) by CO(2)(·-).

Asunto(s)

Dióxido de Carbono/química; Mercurio/química; Aniones/química; Radicales Libres/química; Rayos Láser; Oxidación-Reducción; Fotólisis; Teoría Cuántica; Temperatura

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Dióxido de Carbono / Mercurio Idioma: En Revista: J Phys Chem A Asunto de la revista: QUIMICA Año: 2010 Tipo del documento: Article País de afiliación: Argentina Pais de publicación: Estados Unidos

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