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Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Compuestos organoantimónicos pentacoordinados que se isomerizan por la rotación del torniquete
Shiro Matsukawa1, Hideaki Yamamichi, Yohsuke Yamamoto
1Department of Chemistry, Graduate School of Science, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Japan.
Journal of the American Chemical Society
|February 20, 2009
Resumen
Los investigadores sintetizaron dos estereoisómeros de los compuestos de antimonio pentacoordinado (estiboranos). La isomerización se produce a través de un mecanismo de rotación del torniquete que involucra el ligando tridentado y dos ligandos monodentados.
Área de la Ciencia:
- Química organometálica Química orgánica de los metales.
- La estereoquímica es la estereoquímica.
- Coordinación Química de la Coordinación
Sus antecedentes:
- Los compuestos de antimonio pentacoordinado, conocidos como estiboranos, exhiben una compleja estereoquímica.
- Comprender los mecanismos de isomerización es crucial para predecir y controlar la reactividad de estos compuestos.
Objetivo del estudio:
- Para sintetizar nuevos compuestos de antimonio pentacoordinado con un ligando tridentado rígido.
- Para dilucidar el mecanismo de estereoisomerización en estos estiboranos recién sintetizados.
Principales métodos:
- Síntesis de dos estereoisómeros de compuestos de antimonio pentacoordinado utilizando un nuevo ligando tridentado rígido.
- Análisis de las vías de isomerización utilizando estudios mecanicistas.
Principales resultados:
- Síntesis exitosa de dos estereoisómeros de compuestos de antimonio pentacoordinado.
- Determinación de que la isomerización procede a través del mecanismo de rotación del torniquete (TR).
- Identificación del ligando tridentado actuando como un trío y los dos ligandos monodentados como un par durante la rotación.
Conclusiones:
- El mecanismo de rotación del torniquete rige la estereoisomerización de estos nuevos stiboranos.
- El ligando tridentado rígido juega un papel clave en la dirección de la trayectoria de rotación.
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