Artículo
Chalcones as analytical reagents of aluminum: Stability, thermodynamic and kinetic study
Muñoz, Vanesa Alejandra
; Kretek, Carolina G.; Montaña, Maria Paulina
; Pappano, Nora Beatriz; Debattista, Nora Beatriz; Ferrari, Gabriela Verónica
Fecha de publicación:
03/2015
Editorial:
Oldenbourg Verlag
Revista:
Zeitschrift für Physikalische Chemie
ISSN:
0942-9352
e-ISSN:
2196-7156
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Chalcones, a group of polyphenolic compounds, has been studied for a long time due to their biological properties and their ability as analytical reagents. In this work the stability and thermodynamic parameters concerning the fotmation in ethanolic medium of two chalcone-aluminium complexes (2′,3- dihydroxychalcone-Al(III) and 2′,4′,3-trihydroxychalcone-Al(III)) were studied and a kinetic study of the formation reaction was aslo performed. Both systems showed 1 : 1 L :M stoichiometry and stability constants at four temperatures were determined. Thermodynamic parameters indicate that both formation reactions are endothermic and driving force is entropic. Kinetic study revealed that 2′,4′,3-trihydroxychalcone-Al(III) formation is faster than 2′,3-dihydroxyclacone- Al(III), a factorwhich can be interestingwhen proposingnewanalytical reagents.
Palabras clave:
Aluminium
,
Chalcone
,
Complexes
,
Kinetic
,
Stability Constants
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INQUISAL)
Articulos de INST. DE QUIMICA DE SAN LUIS
Articulos de INST. DE QUIMICA DE SAN LUIS
Citación
Muñoz, Vanesa Alejandra; Kretek, Carolina G.; Montaña, Maria Paulina; Pappano, Nora Beatriz; Debattista, Nora Beatriz; et al.; Chalcones as analytical reagents of aluminum: Stability, thermodynamic and kinetic study; Oldenbourg Verlag; Zeitschrift für Physikalische Chemie; 229; 3; 3-2015; 417-426
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