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Síntesis y reactividad de un complejo de hierro y estaño con unidades adyacentes de estanilidina y ferriostanileno

Yang Liu¹, Franz F Westermair², Isabelle Becker³

¹Institute of Inorganic Chemistry, University of Regensburg, Regensburg 93040, Germany.

Journal of the American Chemical Society

|February 11, 2025

Resumen

Los complejos de carbinos de metales de transición más pesados, como el nuevo compuesto de hierro y estaño [Fe(SnAr') ₂, son prometedores para activar moléculas pequeñas. Este estudio detalla su síntesis y diversas reacciones, destacando su potencial en la activación cooperativa de moléculas pequeñas.

Área de la Ciencia:

Química organometálica
Química del grupo principal
Ciencias de los materiales

Sus antecedentes:

Los análogos de carbino de metales de transición más pesados son valiosos para la activación cooperativa de moléculas pequeñas.
Los complejos con múltiples ligandos de tetrilidina más pesados (RE) son raros debido a las altas tendencias de oligomerización.

Objetivo del estudio:

Para sintetizar y caracterizar un nuevo análogo de carbino de hierro y estaño, [Fe(SnAr ichTextBox) ₂ (1).
Explorar la reactividad del complejo 1 con metales de transición y compuestos del grupo principal.
Investigar el potencial del complejo 1 para la activación de moléculas pequeñas.

Principales métodos:

Síntesis y caracterización de [Fe...]
Reacciones con Ni (COD) ₂, AlBr₃, CH₃I, PMe₃, CO₂, CS₂ y P₄.
Estudios químicos cuánticos para elucidar las interacciones electrónicas.

Principales resultados:

[Fe ((SnAr ichTextBox) ₂] (1) tiene enlaces simples y dobles de Fe-Sn adyacentes.
El complejo 1 reacciona con Ni ((COD) ₂ para formar un complejo tetranuclear con una interacción "push-pull" Ni ((0) -Sn.
Las reacciones con AlBr₃, CH₃I y PMe₃ demuestran diversas activaciones de enlaces y migraciones de ligandos.
La activación de CO₂, CS₂ y P₄ conduce a nuevas formaciones de ligandos, incluidas las especies con puentes de carbonato, tetratiolato y fosfuro.

Conclusiones:

El complejo 1 exhibe una reactividad versátil, mostrando el comportamiento cooperativo de los sitios de Fe y Sn.
El estudio demuestra el potencial de los análogos de carbino de hierro-lata como reactivos para la activación de pequeñas moléculas inorgánicas.
Esta investigación abre caminos para el desarrollo de nuevos catalizadores y materiales basados en complejos de tetrilidina más pesados.

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