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Formación inesperada de un complejo cicloentadienilrutenio-alcoxicarbonilo con un enlace coordinado C=C
Jenny B Aberg1, Madeleine C Warner, Jan-E Bäckvall
1Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden.
Journal of the American Chemical Society
|September 24, 2009
Resumen
La reacción de un complejo de rutenio con 5-hexeno-2-ol produjo dos diastereómeros de un complejo de alkoxicarbonilo. Estos complejos presentaban un doble enlace coordinado, confirmado mediante la RMN y la espectroscopia FT-IR.
Área de la Ciencia:
- Química organometálica Química orgánica de los metales.
- Coordinación Química de la Coordinación
- Síntesis orgánica La síntesis orgánica.
Sus antecedentes:
- Los complejos de rutenio son catalizadores versátiles en la síntesis orgánica.
- Los complejos de alcoxicarbonilo con olefinas coordinadas son de interés para aplicaciones catalíticas.
Objetivo del estudio:
- Para sintetizar y caracterizar nuevos complejos alkoxicarbonilo de rutenio.
- Para investigar el comportamiento de coordinación de una olefina en tales complejos.
Principales métodos:
- Reacción de (eta(5)-Ph(5)C(5)) Ru(CO)(2)(Ot-Bu) con el 5-hexeno-2-ol.
- Caracterización mediante espectroscopia de resonancia magnética nuclear (RMN) ((1) H y (13) C).
- Espectroscopia de infrarrojos de la transformación de Fourier (FT-IR) in situ.
Principales resultados:
- Formación de dos diastereómeros de un complejo de alkoxicarbonilo.
- Observación del doble enlace coordinado con el centro del rutenio.
- La espectroscopia de RMN reveló picos característicos de carbonilo en 203.48, 203.55 y 204.0 ppm (proporción 1:1:2).
- La espectroscopia FT-IR confirmó la presencia de grupos carbonilo (CO) y acilo en 1982 cm(-1) y 1644 cm(-1), respectivamente.
Conclusiones:
- El estudio sintetizó y caracterizó con éxito complejos de rutenio-alcoxicarbonilo.
- Los resultados demuestran la capacidad de estos complejos para coordinar las olefinas.
- Los datos espectroscópicos proporcionan información sobre la estructura y la unión de estos compuestos organometálicos.
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