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Los derivados metálicos del carbonio del 1,4-quinona y el 1,4-hidroquinona
Richard D Adams1, Shaobin Miao
1Department of Chemistry and Biochemistry, University of South Carolina Columbia, 29208, USA. adams@mail.chem.sc.edu
Journal of the American Chemical Society
|April 22, 2004
Resumen
CpMoMn ((CO) 5 ((mu-S2) reacciona con la 1,4-benzoquinona para formar un nuevo ligando quinoditiolato. Este compuesto puede ser reducido a un ligando hidroquinonedithiolato y reoxidado, lo que demuestra una química redox reversible.
Área de la Ciencia:
- Química organometálica Química orgánica de los metales.
- Coordinación Química de la Coordinación
- Química de los ligandos de azufre
Sus antecedentes:
- La síntesis y la reactividad de complejos de metales de transición con ligandos que contienen azufre son cruciales en la catálisis y la ciencia de los materiales.
- CpMoMn ((CO) 5 ((mu-S2) sirve como un precursor para los nuevos compuestos organometálicos.
Objetivo del estudio:
- Para investigar la reacción de CpMoMn ((CO) 5 ((mu-S2) con la 1,4-benzoquinona.
- Caracterizar el complejo organometálico resultante y sus propiedades redox.
Principales métodos:
- Reacción de CpMoMn ((CO) 5 ((mu-S2) con el 1,4-benzoquinona.
- Reducción química del producto utilizando hidrógeno.
- Reoxidación química mediante el uso de hexafluorofosfato de ferrocenio.
Principales resultados:
- Formación de CpMoMn ((CO) 5 ((mu-S2C6H2O2), que incluye un ligando 1,4-quinoneditiolato derivado de la 1,4-benzoquinona.
- La reducción produjo CpMoMn ((CO) 5[mu-S2C6H2 ((OH) 2], un complejo de 1,4-hidroquinonitiolato.
- Se logró una transformación redox reversible entre las formas de quinona e hidroquinona.
Conclusiones:
- Se ha establecido una nueva vía sintética para los complejos organometálicos quinoditiolato.
- El núcleo CpMoMn ((CO) 5) facilita la formación y el ciclo redox de los ligandos del dithiolato derivados de la benzoquinona.
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