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Complejos de imido terminales de cobalto (III) apoyados por ligandos de tris (III): inserción de imido en el enlace
1Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, MC 0358, La Jolla, California 92093-0359, USA.
Journal of the American Chemical Society
|December 17, 2004
Resumen
Los complejos de cobalto (I) altamente reactivos reaccionan con azidas orgánicos para formar complejos de cobalto (III) imido. El grupo imido luego se inserta en el enlace cobalto-carbeno, creando nuevos complejos de cobalto bis-carbeno imino.
Área de la Ciencia:
- Química organometálica Química orgánica de los metales.
- Coordinación Química de la Coordinación
- La catálisis de la catálisis.
Sus antecedentes:
- Los complejos de cobalto tris-carbeno son conocidos por su reactividad.
- Las azidas orgánicas son fuentes versátiles de nitrógeno en la síntesis química.
Objetivo del estudio:
- Para investigar la reacción entre los complejos de tris-carbenos cobalto (I) y azidas orgánicas.
- Para caracterizar los complejos de cobalto-imido resultantes y su posterior reactividad.
Principales métodos:
- Síntesis de los complejos de cobalto ((I) de tris-carbenos.
- Reacción de complejos de cobalto con varias azidas orgánicas.
- Caracterización de productos utilizando técnicas espectroscópicas y cristalografía de rayos X. Caracterización de productos utilizando técnicas espectroscópicas y cristalografía de rayos X. Caracterización de productos utilizando técnicas espectroscópicas y cristalografía de rayos X. Caracterización de productos utilizando técnicas espectroscópicas y cristalografía de rayos X.
Principales resultados:
- Formación de complejos imido monoméricos de cobalto (III).
- Demostración de la naturaleza electrofílica del fragmento de cobalto-imido.
- Observación de la inserción del grupo imido en el enlace cobalto-carbeno.
Conclusiones:
- El estudio sintetizó con éxito nuevos complejos de cobalto (III) imido.
- Se aclaró la reactividad de estos complejos, revelando una nueva vía a los complejos de cobalto bis-carbeno-imino.
- Este trabajo amplía la comprensión de las transformaciones mediadas por cobalto que involucran azidas y carbenos.
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