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Bicyclo a base de hafnoceno [2.1.1] germilenos de hexeno - Formación, reactividad y flexibilidad estructural

Zhaowen Dong¹, Katja Bedbur¹, Marc Schmidtmann¹

¹Institute of Chemistry, Carl von Ossietzky University of Oldenburg , Carl von Ossietzky-Str. 9-11, D-26129 Oldenburg, FRG, European Union.

Journal of the American Chemical Society

|January 30, 2018

Resumen

Se sintetizaron nuevos germilenos basados en hafnoceno a partir de dianiones de germoles sustituidos por desililo. Estos nuevos compuestos exhiben estabilización electrónica única y flexibilidad estructural, sirviendo como ligandos versátiles para metales de transición.

Área de la Ciencia:

Química organometálica
Química del grupo principal
Química de coordinación

Sus antecedentes:

Los dianiones germólicos son precursores versátiles en la síntesis organometálica.
Los complejos de hafnoceno son conocidos por su reactividad y potencial catalítico únicos.

Objetivo del estudio:

Sintetizar y caracterizar nuevos germilenos basados en hafnoceno.
Investigar la estructura electrónica y la unión en estos nuevos complejos de germilenos.
Para explorar el potencial de estos germilenos como ligandos en la química de coordinación.

Principales métodos:

Reacción de 2,5-dianiones de germóleo sustituidos con dicloruro de hafnoceno.
Identificación espectroscópica (NMR, UV) de los complejos intermedios de hafnoceno y germileno.
Estudios de complicación con metales de transición de baja valencia (Fe{0}, Ni{0}, Au{1}) y carbenos heterocíclicos.

Principales resultados:

Síntesis exitosa de biciclo[2.1.1]hexeno germilenos basados en el hafnoceno.
Identificación de los complejos intermedios de hafnoceno y germileno.
Demostración de la homoconjugación que estabiliza el germileno.
Exposición de flexibilidad estructural en complejos con varios metales de transición.

Conclusiones:

Se ha desarrollado una nueva clase de germilenos a base de hafnoceno.
Estos germilenos poseen propiedades electrónicas y estructurales únicas debido a la homoconjugación y la fracción de hafnoceno.
La adaptabilidad estructural observada los convierte en prometedores ligandos para diversos complejos de metales de transición.

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