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Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
Published on: May 15, 2015
Eliminación de hidrógeno en complejos voluminosos de calcio amidoborano: aislamiento de un complejo de calcio
1Universitat Duisburg-Essen,Universitatsstrasse 5, 45117 Essen, Germany.
Journal of the American Chemical Society
|March 27, 2009
Resumen
La descomposición de los complejos de calcio amidoborano cambia en función del tamaño del sustituto. Los grupos más pequeños conducen a la deshidrogenación, mientras que los grupos más grandes forman un anión de borolamida, útil para la hidrogenación catalítica.
Área de la Ciencia:
- Química Inorgánica La Química Inorgánica es la química inorgánica.
- Química organometálica Química orgánica de los metales.
- Ciencia de los materiales Ciencia de los materiales.
Sus antecedentes:
- Los complejos de calcio amidoborano se investigan para sus vías de descomposición.
- El papel del bulto estérico sustituyente en la dirección de los resultados de la reacción es un área clave de estudio.
Objetivo del estudio:
- Para dilucidar los mecanismos de descomposición de los complejos de calcio amidoborano sustituido por N.
- Para correlacionar las propiedades estéricas del sustituto con los productos de descomposición resultantes.
Principales métodos:
- Síntesis y caracterización de complejos de calcio amidoborano con N sustituido.
- Análisis de productos de descomposición bajo diferentes condiciones.
Principales resultados:
- La descomposición de los complejos con pequeños sustituyentes (H, Me, iPr) produce complejos diméricos con un puente RN-BH-N(R) -BH(3)(2-) ion.
- Un voluminoso sustituto de 2,6-di-isopropilfenilo conduce a la formación de un complejo de aniones de boriliamida: H(2) B(R) N(-).
Conclusiones:
- La masa estérica del sustituto N dicta críticamente la vía de descomposición de los complejos de calcio amidoborano.
- El producto del anión borilámido muestra potencial para la regeneración catalítica a través de la hidrogenación al anión amidoborano.
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