EPR detection of Fe(V)=O active species in nonheme iron-catalyzed oxidations
Very recently, in situ cryospray-assisted variable temperature mass spectrometry (VT-MS) has been used to obtain the first convincing evidence for a HO-Fe-V=O intermediate in the catalyst system [((Me2)PyTACN) Fe-II(OTf)(2)] (4)/H2O2 ((Me2)PyTACN = 1-(2'-pyridylmethyl)-4,7-dimethyl-1,4,7-triaza...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/10176 |
| Acceso en línea: | http://hdl.handle.net/10256/10176 |
| Access Level: | acceso embargado |
| Palabra clave: | Química bioinorgànica Bioinorganic chemistry Aigua oxigenada Hydrogen peroxide Mecanismes de reacció (Química) Reaction mechanisms (Chemistry) Peròxids -- Oxidació Peroxides -- Oxidation |
| Sumario: | Very recently, in situ cryospray-assisted variable temperature mass spectrometry (VT-MS) has been used to obtain the first convincing evidence for a HO-Fe-V=O intermediate in the catalyst system [((Me2)PyTACN) Fe-II(OTf)(2)] (4)/H2O2 ((Me2)PyTACN = 1-(2'-pyridylmethyl)-4,7-dimethyl-1,4,7-triazacyclononane, OTf = OSO2CF3). The herein presented EPR spectroscopic study of the same system witnesses the formation of S = 1/2 reactive iron species. Its EPR parameters, in combination with its reactivity pattern toward cyclohexene and with independently obtained VT-MS data, allow for its reasonable assignment to the reactive [((Me2)PyTACN)Fe-V=O(OH)](2+) (4c) species |
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