Iron oxide and pyrocatechol: a spectroscopy study of the reaction products



Título del documento: Iron oxide and pyrocatechol: a spectroscopy study of the reaction products
Revista: Quimica nova
Base de datos: PERIÓDICA
Número de sistema: 000313215
ISSN: 0100-4042
Autors: 1


2
Institucions: 1Universidade Estadual de Londrina, Departamento de Quimica, Londrina, Parana. Brasil
2Universidade de Sao Paulo, Instituto de Quimica, Sao Paulo. Brasil
Any:
Període: Nov
Volum: 29
Número: 6
Paginació: 1255-1258
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés The reaction of 1,2-dihydroxy-benzene (pyrocatechol) (C6H6O2) with iron oxide (Fe2O3) and sodium thiosulfate (Na2S2O3) in aqueous medium (pH 7) was investigated. Pyrocatechol suffers autoxidation and coordinates with Fe3+ in solution. The presence of S2O3(2-) in solution was fundamental to generate and stabilize the pyrocatechol oxidation products as o-semiquinones. This compound was isolated and its structure characterized using FT-IR, EPR and UV-Vis Spectroscopy as [CTA][Fe(SQ)2(Cat)]. A thermal mass loss mechanism was proposed based on Thermogravimetric Analysis (TG) to support the structural characterization
Disciplines Química
Paraules clau: Química orgánica,
Pirocatecol,
Oxido de hierro,
Tiosulfato de sodio
Keyword: Chemistry,
Organic chemistry,
Pyrocatechol,
Iron oxide,
Sodium thiosulfate
Text complet: Texto completo (Ver HTML)