Elongated dihydrogen versus compressed dihydride in osmium complexes
Small modifications on the co-ligands of complexes containing two coordinated hydrogen atoms can determine the elongated dihydrogen versus compressed dihydride nature of these species and therefore their chemical behavior. 2,6-diphenylpyridine favors the formation of the osmium(IV) cation [OsH2(C6H4...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/143343 |
| Acceso en línea: | http://hdl.handle.net/10261/143343 |
| Access Level: | acceso abierto |
| Palabra clave: | Agostic interactions C−H activation Dihydrogen Hydrides Osmium |
| Sumario: | Small modifications on the co-ligands of complexes containing two coordinated hydrogen atoms can determine the elongated dihydrogen versus compressed dihydride nature of these species and therefore their chemical behavior. 2,6-diphenylpyridine favors the formation of the osmium(IV) cation [OsH2(C6H4pyPh)(PiPr3)2]+, whereas 2-phenoxy-6-phenylpyridine, which contains an oxygen atom between the heterocycle and one of the phenyl groups, stabilizes the osmium(II) elongated dihydrogen species [Os(C6H4pyOPh)(η2-H2)(PiPr3)2]+. In contrast to the latter, the former shows a marked tendency to undergo reductive elimination of the heterocycle. |
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