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La adición de enlaces H-H y Si-H a los intermediarios FeNNR2 derivados del N2

Daniel L M Suess¹, Jonas C Peters

¹Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States.

Journal of the American Chemical Society

|March 12, 2013

Resumen

Los complejos de hierro con difosfinboranos permiten la funcionalización del nitrógeno (N2). Estos complejos reaccionan con enlaces E-H, facilitando la fijación de nitrógeno y formando nuevos enlaces químicos bajo condiciones suaves.

Área de la Ciencia:

Química organometálica Química orgánica de los metales.
Química Inorgánica La Química Inorgánica es la química inorgánica.
La catálisis es la catálisis.

Sus antecedentes:

La funcionalización del nitrógeno (N2) es crucial para la síntesis de compuestos que contienen nitrógeno.
El desarrollo de catalizadores eficientes para la activación de N2 en condiciones suaves sigue siendo un desafío importante en química.

Objetivo del estudio:

Para sintetizar y caracterizar nuevos complejos de difosfinborano de hierro.
Para investigar la reactividad de estos complejos en la química de la funcionalización N2.
Comprender el papel de las interacciones hierro-boro en los procesos catalíticos.

Principales métodos:

Síntesis de complejos de difosfinborano de hierro.
Caracterización mediante técnicas espectroscópicas.
Estudios de reactividad que involucran reacciones con enlaces E-H (por ejemplo, PhSiH3, H2) bajo atmósfera de nitrógeno.

Principales resultados:

Se generaron aminoimidas de hierro a temperatura ambiente y 1 atm N2.2.
Estos complejos reaccionaron con PhSiH3 y H2, lo que implicó la entrega del fragmento E al nitrógeno e hidrógeno al boro.
La reactividad observada se atribuye a las interacciones Fe-BPh flexibles y labiles.

Conclusiones:

Los complejos de difosfinborano de hierro son catalizadores efectivos para la funcionalización del N2.
La interacción única Fe-B facilita la activación y la transformación de N2.
Este trabajo proporciona nuevos conocimientos sobre el mecanismo de fijación del nitrógeno y las reacciones catalíticas relacionadas.

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