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The Synthesis of [Sn10(Si(SiMe3)3)4]2- Using a Metastable Sn(I) Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
Síntesis, estructura y propiedades de un complejo estiboranilo-oro de 14 electrones en forma de T
Casey R Wade1, Tzu-Pin Lin, Ryan C Nelson
1Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, USA.
Journal of the American Chemical Society
|May 14, 2011
Resumen
Un nuevo complejo de oro trivalente con un ligando de stiboranilo exhibe interacciones aerofílicas inesperadas, lo que sugiere una fuerte donación de electrones. Este complejo reacciona con el fluoruro para formar un aniónico aurato fluorostiborano, ampliando el conocimiento de la química oro-antimonio.
Área de la Ciencia:
- Química organometálica Química orgánica de los metales.
- Química Inorgánica La Química Inorgánica es la química inorgánica.
- Coordinación Química de la Coordinación
Sus antecedentes:
- Los complejos de oro trivalentes son menos comunes que los monovalentes.
- Las interacciones aerofílicas se observan típicamente en los compuestos de oro monovalente.
- Comprender los efectos de los ligandos en las propiedades electrónicas del oro es crucial.
Objetivo del estudio:
- Para sintetizar y caracterizar un nuevo complejo cíclico estiboranilo-oro.
- Para investigar las propiedades electrónicas y la reactividad del oro trivalente.
- Para explorar la formación de complejos aniónicos oro-antimonio.
Principales métodos:
- Síntesis y caracterización estructural del complejo oro-stiboranilo.
- Cálculos de la Teoría Funcional de la Densidad (DFT).
- Absorción de rayos X cerca de la estructura del borde (XANES) espectroscopia (Au L(3)- y Sb K-borde).
- Estudios de reactividad con varios haluros.
Principales resultados:
- Se sintetizó un complejo cíclico estiboranilo-oro (III) (1) con una geometría de oro en forma de T.
- El complejo muestra una inusual interacción aerofílica, lo que indica oro trivalente rico en electrones.
- Los espectros DFT y XANES apoyan una descripción del derivado aurato-estibonio.
- El complejo 1 reacciona con el fluoruro para formar un complejo aniónico aurato fluorostiborano ([2](-)).
Conclusiones:
- El ligando de stiboranilo imparte fuertes propiedades de donación de sigma al centro oro trivalente.
- El complejo sintetizado exhibe características electrónicas y de enlace únicas.
- La formación del complejo aniónico demuestra nuevas vías de reactividad para los sistemas oro-antimonio.
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