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Análogos del pnictógeno y el silicio del benceno

Andreas E Seitz¹, Maria Eckhardt¹, Andreas Erlebach²

¹Institute of Inorganic Chemistry, University of Regensburg , Universitätsstr. 31, 93040 Regensburg, Germany.

Journal of the American Chemical Society

|August 12, 2016

Resumen

Los investigadores sintetizaron nuevos compuestos de arsénico y fósforo de silicio, los primeros congéneres de pnictógeno y silicio del benceno. Estas nuevas moléculas ofrecen posibilidades emocionantes para la química inorgánica y la ciencia de los materiales.

Área de la Ciencia:

Química inorgánica
Química organometálica
Ciencias de los materiales

Sus antecedentes:

La síntesis de análogos de benceno no basados en carbono, conocidos como benceno inorgánico, sigue siendo un desafío significativo.
La borazina (B3N3H6) fue el primer benceno inorgánico descubierto, lo que despertó el interés en estructuras relacionadas.

Objetivo del estudio:

Para sintetizar y caracterizar los primeros congéneres de pnictógeno y silicio del benceno.
Explorar nuevos sistemas de anillos inorgánicos con propiedades aromáticas potenciales.

Principales métodos:

Reacción de metátesis entre complejos de circonio y precursores que contienen silicio.
Síntesis de triarso y trifosfo-trisilabenceno mediante el uso de reactivos organometálicos específicos.
Caracterización de compuestos sintetizados mediante técnicas espectroscópicas y analíticas.
Cálculos de la teoría funcional de la densidad (DFT) para evaluar la estabilidad y la aromaticidad.

Principales resultados:

Sintetizó con éxito triarsa y trifosfa-trisilabenceno, los primeros congéneres de pnictógeno y silicio del benceno.
También sintetizó congéneres de pnictógeno de silicio de ciclobutadieno, incluyendo un sistema de arsénico sin precedentes.
La caracterización exhaustiva confirmó las estructuras de los nuevos compuestos.
Los cálculos de DFT apoyaron la estabilidad y el carácter aromático de los derivados de trisilabenceno.

Conclusiones:

El estudio informa de la primera síntesis de análogos de pnictógeno y benceno de silicio.
La reacción de metástasis desarrollada proporciona una ruta viable a estos nuevos sistemas de anillos inorgánicos.
Los hallazgos abren nuevas vías para diseñar y sintetizar compuestos inorgánicos únicos con aplicaciones potenciales.

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