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Montaje de clusters heterometálicos de plata (I) y cobre (I) alquilo-1,3-dinilo mediante la expansión del núcleo

Sam C K Hau^1,2, Margaret C-L Yeung³, Vivian W-W Yam³

¹Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong SAR, People's Republic of China.

Journal of the American Chemical Society

|September 28, 2016

Resumen

Los investigadores crearon nuevos grupos de plata y cobre a partir de precursores de plata tetranucleares. Estos grupos heterometálicos muestran potencial para nuevos materiales, expandiendo la química de los grupos homonucleares.

Área de la Ciencia:

Química supramolecular
Química inorgánica
Ciencias de los materiales

Sus antecedentes:

Se sintetizaron precursores supramoleculares tetranucleares con ligandos de alquilo-1,3-diynyl.
Estos precursores sirven como bloques de construcción para grupos de metales más complejos.

Objetivo del estudio:

Para construir nuevos complejos heterometálicos de plata (I) y cobre (I).
Investigar las propiedades estructurales y fotofísicas de estos nuevos cúmulos.
Para explorar la expansión de los grupos homonucleares en los heteronucleares.

Principales métodos:

Síntesis de precursores supramoleculares tetranucleares [R-CC-CC) Ag]4.
Construcción de complejos heterometálicos de plata (I) - cobre (I) (1-9) con núcleos CuAg3.
Investigación de las características estructurales, incluidas las interacciones cupro-argentófilas.
Análisis de las propiedades fotofísicas.

Principales resultados:

Se sintetizó con éxito una serie de complejos heterometálicos de plata ((I) - cobre ((I) - alquilo-1,3-dianila).
Se observó el núcleo común CuAg3, con geometrías trigonal-planar o piramidal estabilizadas por interacciones cupro-argentófilas.
El proceso de ensamblaje implica la acumulación de iones de plata adicionales en la plantilla CuAg3.
Se investigaron las propiedades fotofísicas de los precursores y de los complejos seleccionados.

Conclusiones:

El estudio demuestra la primera conversión reportada de un cúmulo homonuclear del Grupo 11 en uno heteronuclear de mayor nuclealidad a través de la expansión del núcleo interno.
Los hallazgos proporcionan nuevos conocimientos sobre el ensamblaje de cúmulos de nucleariedad media y el papel de las interacciones metal-metal.
Los complejos sintetizados ofrecen potencial para aplicaciones en la ciencia de los materiales debido a sus estructuras y propiedades únicas.

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