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(η(4)-Butadieno) Sn(0) Complejos: Un nuevo enfoque para los elementos de bloque p de valencia cero utilizando un

Takuya Kuwabara¹, Marisa Nakada¹, Jumpei Hamada¹

¹Department of Chemistry, Graduate School of Science and Engineering, Saitama University , Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan.

Journal of the American Chemical Society

|August 12, 2016

Resumen

Los investigadores desarrollaron un nuevo método para estabilizar los elementos del grupo 14 de valencia cero utilizando el butadieno como donante de electrones 4π. Este enfoque ofrece nuevos conocimientos sobre la química de coordinación de estos elementos únicos.

Área de la Ciencia:

Química inorgánica sintética
Química orgánica de los metales
La química de los elementos del grupo principal

Sus antecedentes:

Los elementos de bloque p de valencia cero exhiben nuevos estados electrónicos con dos pares aislados en orbitales s y p.
La estabilización de estas especies de baja valencia generalmente requiere ligandos σ-donantes con sustituyentes voluminosos.

Objetivo del estudio:

Explorar una nueva estrategia para estabilizar los elementos del grupo 14 de valor cero.
Investigar el uso del butadieno como donante de electrones 4π para estabilizar estos elementos.

Principales métodos:

Exploración de la química de coordinación de los ligandos de estanociclopentadienilo.
Síntesis y caracterización de complejos organotin-butadieno inesperados.
Análisis de difracción por rayos X y cálculos teóricos para confirmar los estados de oxidación y la unión.

Principales resultados:

Formación inesperada de complejos de estaño con un ligando de β-coordinado.
Confirmación del estado de oxidación formal cero para los átomos de estaño en los productos.
Elucidación del mecanismo de reacción que conduce a estos nuevos complejos.

Conclusiones:

El butadieno puede estabilizar efectivamente los elementos del grupo 14 de valor cero.
Este estudio introduce una nueva vía sintética para los compuestos organometálicos del grupo principal de baja valencia.
Los hallazgos amplían la comprensión del enlace y la reactividad en la química del grupo principal.

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