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Aislamiento de puentes y terminales de acuñación de complejos metal-nitrógeno

Fabian Dielmann¹, Diego M Andrada, Gernot Frenking

¹UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California-San Diego , La Jolla, California 92093-0343, United States.

Journal of the American Chemical Society

|February 25, 2014

Resumen

Los investigadores aislaron complejos estables de cobre y nitreno de plata, intermedios clave en las reacciones catalíticas. Estos hallazgos avanzan en la comprensión de los enlaces múltiples metal-nitrógeno en la síntesis química.

Área de la Ciencia:

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

Sus antecedentes:

Los complejos de metales de transición con enlaces múltiples metal-nitrógeno son cruciales para la fijación del nitrógeno y la formación de enlaces C-N.
Los complejos terminales de cobre y nitreno de plata son hipotéticos intermediarios en las reacciones de aziridinación y aminación.

Objetivo del estudio:

Para aislar y caracterizar los complejos de cobre y plata-nitreno evasivos.
Para investigar la reactividad del fosfinonitreno con los trifluorometanosulfonatos de metal de acuñación.

Principales métodos:

Reacción de un fosfinonitreno estable con trifluorometanosulfonatos de cobre y plata.
Caracterización mediante la espectroscopia de resonancia magnética nuclear (RMN).
Determinación estructural mediante análisis de difracción de rayos X de un solo cristal.

Principales resultados:

Aislamiento de puentes estables y complejos terminales de cobre y plata-nitreno.
Caracterización espectroscópica exitosa de estas especies altamente reactivas.
Confirmación de su estructura a través de la difracción de rayos X.

Conclusiones:

Los complejos estables de cobre y nitreno de plata se pueden sintetizar a partir de los fosfinonitreno.
Este trabajo proporciona el primer aislamiento y caracterización de estos intermediarios clave.
Permite estudios adicionales sobre sus aplicaciones catalíticas.

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