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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
Published on: February 6, 2019
Un compuesto bicíclico estable con dos enlaces dobles Si=Si.
T Iwamoto1, M Tamura, C Kabuto
1Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan.
Science (New York, N.Y.)
|October 20, 2000
Resumen
Los investigadores sintetizaron un análogo de silicio del espiropentadieno, un compuesto único de doble anillo. Este descubrimiento desafía las suposiciones anteriores sobre la accesibilidad y síntesis del doble enlace de silicio.
Área de la Ciencia:
- Química del organosilicio y su química.
- Química inorgánica sintética química inorgánica sintética
Sus antecedentes:
- El carbono forma fácilmente enlaces dobles, a diferencia del silicio.
- Los dobles enlaces de silicio-silicio generalmente requieren sustitutos voluminosos para la estabilización.
Objetivo del estudio:
- Para sintetizar y caracterizar un análogo de silicio del espiropentadieno.
- Investigar las propiedades estructurales y electrónicas de los enlaces dobles silicio-silicio en un nuevo sistema cíclico.
Principales métodos:
- Aislamiento y purificación del tetráquico [tri ((t-butyldimethylsilyl) silyl] espiropentasiladieno.
- Cristalografía de rayos X para determinar la estructura molecular.
- Análisis espectroscópico (por ejemplo, RMN, UV-Vis) para sondear las interacciones electrónicas.
Principales resultados:
- Aislamiento exitoso de un análogo de silicio estable del espiropentadieno.
- Se observó una desviación significativa de la planitud en la estructura de doble anillo.
- Los datos espectroscópicos revelaron interacciones electrónicas entre los enlaces dobles silicio-silicio.
Conclusiones:
- Los enlaces dobles silicio-silicio pueden estabilizarse en complejos sistemas de anillos.
- La síntesis de tales compuestos es más factible de lo que se pensaba anteriormente.
- Este trabajo abre nuevas vías para la investigación de compuestos orgánicos de silicio.
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