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Adición oxidativa de agua a los nuevos complejos de Ir (I) estabilizados por ligandos de dimetilsulfóxido
Reto Dorta1, Haim Rozenberg, Linda J W Shimon
1Departments of Organic Chemistry and Chemical Services, The Weizmann Institute of Science, Rehovot 76100, Israel.
Journal of the American Chemical Society
|January 10, 2002
Resumen
Los nuevos complejos de iridio (I) con dimetil sulfóxido (DMSO) se someten a la adición oxidativa de agua. Las nuevas estructuras diméricas con ligandos hidroxo puentes se caracterizaron por la cristalografía de rayos X.
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 iridio son valiosos catalizadores y precursores en varias transformaciones químicas.
- Comprender la reactividad de los complejos de iridio (I) con ligandos como el dimetilsulfóxido (DMSO) es crucial para desarrollar nuevas metodologías sintéticas.
Objetivo del estudio:
- Para sintetizar y caracterizar nuevos complejos de iridio (I) que incorporan ligandos de DMSO.
- Para investigar la adición oxidativa de agua a estos complejos de iridio.
- Explorar las características estructurales de los productos resultantes, incluidas las estructuras diméricas y los modos de enlace de ligando.
Principales métodos:
- Síntesis de complejos de iridio, incluyendo IrCl (DMSO) 3 y [Ir (DMSO) 4]PF6.
- Reacción de complejos de iridio con agua para inducir la adición oxidativa.
- Caracterización de productos mediante el uso de cristalografía de rayos X.
- Reacciones de intercambio de ligandos con piridina.
Principales resultados:
- Síntesis exitosa de IrCl ((DMSO) 3 (1) y su dímero [Ir2Cl2 ((DMSO) 4) ] (2).
- Preparación del catiónico [Ir(DMSO) 4) PF6 (6) y su reacción con agua dando productos diméricos 3 y 7.
- Caracterización cristalográfica de rayos X de los compuestos 1, 3 y 7, revelando estructuras diméricas con ligandos hidroxo puentes.
- Observación de los ligandos de DMSO con enlaces O y S en el complejo 7.
Conclusiones:
- Los nuevos complejos de iridio ((I) DMSO se someten fácilmente a la adición oxidativa de agua.
- Las estructuras diméricas resultantes resaltan el papel de los ligandos hidroxo puentes en la estabilización de las especies de iridio.
- El estudio proporciona información sobre el comportamiento de coordinación de los ligandos DMSO en los complejos de iridio, incluida la posible unión S.
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