Dehydrogenative Double C-H Bond Activation in a Germylene-Rhodium Complex**
Transition metal tetrylene complexes offer great opportunities for molecular cooperation due to the ambiphilic character of the group 14 element. Here we focus on the coordination of germylene [(ArMes2)2Ge:] (ArMes=C6H3-2,6-(C6H2- 2,4,6-Me3)2) to [RhCl(COD)]2 (COD=1,5-cyclooctadiene), which yields a...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/254496 |
| Acceso en línea: | http://hdl.handle.net/10261/254496 |
| Access Level: | acceso abierto |
| Palabra clave: | C-H bond activation chemical cooperation germylene metallotetrylene tetrylene |
| Sumario: | Transition metal tetrylene complexes offer great opportunities for molecular cooperation due to the ambiphilic character of the group 14 element. Here we focus on the coordination of germylene [(ArMes2)2Ge:] (ArMes=C6H3-2,6-(C6H2- 2,4,6-Me3)2) to [RhCl(COD)]2 (COD=1,5-cyclooctadiene), which yields a neutral germyl complex in which the rhodium center exhibits both η6- and η2-coordination to two mesityl rings in an unusual pincer-type structure. Chloride abstraction from this species triggers a singular dehydrogenative double C H bond activation across the Ge/Rh motif. We have isolated and fully characterized three rhodium-germyl species associated to three C H cleavage events along this process. The reaction mechanism has been further investigated by computational means, supporting the key cooperative action of rhodium and germanium centers. |
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