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Rectángulos metálicos heterometálicos basados en Cp*Rh: estructuras de enlaces borromeos dependientes del tamaño y

Sheng-Li Huang¹, Yue-Jian Lin, T S Andy Hor

¹Advanced Materials Laboratory, Department of Chemistry, Fudan University , Shanghai 200433, P. R. China.

Journal of the American Chemical Society

|May 18, 2013

Resumen

Se sintetizaron nuevos rectángulos metálicos con complejos Cp*Rh. Una estructura exhibe una notable actividad catalítica en reacciones de transferencia de acilo debido a sus centros de cobre abiertos y espacio de cavidad.

Área de la Ciencia:

Química organometálica Química orgánica de los metales.
Química supramolecular de las moléculas.
La catálisis es la catálisis.

Sus antecedentes:

Los rectángulos metálicos son jaulas de coordinación con aplicaciones potenciales en la catálisis.
Los complejos Cp*Rh ofrecen propiedades electrónicas y estéricas únicas para sistemas catalíticos.
Los enlaces borromeos representan complejas arquitecturas topológicas en la química supramolecular.

Objetivo del estudio:

Para sintetizar nuevos rectángulos metálicos basados en Cp*Rh.
Para investigar la diversidad estructural, incluidas las arquitecturas de enlace borromeo.
Para evaluar el rendimiento catalítico de los complejos sintetizados en reacciones de transferencia de acilo.

Principales métodos:

Síntesis de rectángulos metálicos a partir de ligandos metálicos.
Caracterización estructural mediante la espectroscopia ESI-MS.
Evaluación catalítica en reacciones de transferencia de acilo.

Principales resultados:

Síntesis exitosa de rectángulos metálicos basados en Cp*Rh.
Aislamiento de dos nuevas arquitecturas de enlace Borromeo.
Demostración de alta eficiencia y amplia selectividad del sustrato en las reacciones de transferencia de acilo por un complejo específico, {(Cp*Rh) 4(bpe) 2[Cu(opba) ·2MeOH] 2} 4(OTf) ·6MeOH, atribuido a sus centros de Cu abiertos y espacio de cavidad.

Conclusiones:

Los rectángulos metálicos basados en Cp*Rh pueden sintetizarse de forma controlada.
Se puede lograr la complejidad estructural, incluidos los enlaces borromeos.
El rectángulo metálico desarrollado exhibe excelentes propiedades catalíticas para las reacciones de transferencia de acilo.

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