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Un complejo de coordinación octaédrico de hierro (VI)
John F Berry1, Eckhard Bill, Eberhard Bothe
1Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany.
Science (New York, N.Y.)
|June 3, 2006
Resumen
Los investigadores sintetizaron un nuevo compuesto de hierro (VI) con una estructura octaédrica y un ligando nitrido. Este descubrimiento amplía la química conocida del hierro de alta valencia, ofreciendo nuevos conocimientos sobre los estados de oxidación del hierro.
Área de la Ciencia:
- Química Inorgánica La Química Inorgánica es la química inorgánica.
- La fotoquímica es la fotoquímica.
- Ciencia de los materiales Ciencia de los materiales.
Sus antecedentes:
- El estado de oxidación más alto accesible para el hierro es el hexavalente (Fe (VI)).
- Anteriormente, el Fe ((VI) sólo se conocía en el dianio ferrato tetraédrico (FeO4 ((2-)).
Objetivo del estudio:
- Informar sobre la síntesis fotoquímica de un nuevo compuesto Fe (VI).
- Caracterizar la estructura y las propiedades electrónicas de esta nueva especie de Fe (VI).
Principales métodos:
- Síntesis fotoquímica. síntesis fotoquímica.
- Espectroscopia de Mössbauer. también conocida como espectroscopia de Mössbauer.
- Espectroscopia de absorción de rayos X. Espectroscopia de absorción de rayos X. Espectroscopia de absorción de rayos X. Espectroscopia de absorción de rayos X. Espectroscopia de absorción de rayos X. Espectroscopia de absorción de rayos X. Espectroscopia de absorción de rayos X. Espectroscopia de absorción de rayos X.
- Cálculos de la teoría funcional de la densidad (DFT).
Principales resultados:
- Se sintetizó un nuevo compuesto Fe ((VI) con coordinación octaédrica.
- El compuesto presenta un ligando de nitrido terminal (enlace triple FeN).
- Los datos espectroscópicos y DFT indican una configuración electrónica de tierra de un solo d2(xy).
- El compuesto es estable a 77 K y se descompone en Fe (III) al calentarse.
Conclusiones:
- Este trabajo expande la química conocida del hierro hexavalente más allá de las especies tetraédricas.
- El descubrimiento de un complejo de nitrido Fe ((VI) octaédrico ofrece nuevas vías para la investigación del hierro de alta valencia.
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