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Updated: Jun 7, 2026

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Disileno sustituido asimétricamente Dsi(2)(i) PrSi-SiSi-SiNpDsi(2) (Np = CH(2)(t) Bu: síntesis y caracterización

Yoshitaka Murata¹, Masaaki Ichinohe, Akira Sekiguchi

¹Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.

Journal of the American Chemical Society

|November 9, 2010

Resumen

Los investigadores sintetizaron un disileno asimétrico, revelando una estructura trans-doblada y un enlace triple silicio-silicio. Diferentes cambios químicos en el silicio indican una variada hibridación en los átomos de silicio triplemente unidos.

Área de la Ciencia:

Química del organosilicio y su química.
Química inorgánica y inorgánica.

Sus antecedentes:

Las disilinas son análogos de silicio de las alquinas, con un enlace triple silicio-silicio.
La sustitución asimétrica en disilenes puede conducir a propiedades electrónicas y estructurales únicas.

Objetivo del estudio:

Para sintetizar y caracterizar una novela asimétricamente sustituido disilyne.
Para investigar las propiedades estructurales y electrónicas del enlace triple silicio-silicio en este nuevo compuesto.

Principales métodos:

Síntesis del compuesto objetivo disileno.
Cristalografía de rayos X para la determinación estructural.
Espectroscopia de Resonancia Magnética Nuclear ((29) Si NMR) para la caracterización electrónica.

Principales resultados:

La disilina asimétrica fue sintetizada y caracterizada con éxito.
La cristalografía de rayos X reveló una geometría molecular trans-doblada.
Se determinó una longitud de enlace triple silicio-silicio de 2,0569 12 Å.
Se observaron cambios químicos de 29Si (62,6 ppm y 106,3 ppm) en los átomos de silicio triplemente unidos.

Conclusiones:

La sustitución asimétrica conduce a una estructura trans-doblada en el disilyne.
Los diferentes cambios químicos indican distintos entornos electrónicos e hibridaciones en los átomos de silicio involucrados en el enlace triple.

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