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Título: | Synthesis, structure and properties of [1,2,4]triazolo[4,3-a]pyridin-3-ylidene rhodium and palladium complexes |
Autor: | Iglesias-Sigüenza, Javier; Ros, Abel CSIC ORCID CVN ; Díez, Elena; Alcarazo, Manuel; Álvarez, Eleuterio CSIC ORCID ; Fernández, Rosario; Lassaletta, José M. CSIC ORCID | Palabras clave: | Rhodium Palladium NHC |
Fecha de publicación: | 21-jul-2009 | Editor: | Royal Society of Chemistry (UK) | Citación: | Dalton Transactions (35) : 7113-7120 (2009) | Resumen: | The reaction of [1,2,4]triazolo[4,3-a]pyridinium tetrafluoroborates with [RhCl(COD)]2 and [PdCl(allyl)]2 takes place under mild basic conditions (Et3N, THF, room temperature) to afford the corresponding [RhCl(COD)(Tripy)] and [PdCl(allyl)(Tripy)] complexes, respectively (Tripy = [1,2,4]triazolo[4,3-a]pyridin-3-ylidene), and their structures were analysed by X-ray diffractometry and spectroscopic techniques. The σ-donor ability of the new ligands was estimated by comparative analysis of infrared νCO stretching frequencies of [RhCl(CO)2(Tripy)] complexes, and proved to be strongly dependent on the substitution pattern. Additionally, a first insight into the catalytic properties of the latter in the Suzuki–Miyaura cross coupling demonstrates a good catalytic activity that enables the coupling of aryl chlorides at room temperature. | Descripción: | 8 páginas, 5 figuras, 2 tablas, 5 esquemas. | Versión del editor: | http://dx.doi.org/10.1039/B907043E | URI: | http://hdl.handle.net/10261/37083 | DOI: | 10.1039/B907043E | ISSN: | 1477-9226 |
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