Hydroboration and hydrogenation of an Osmium–Carbon triple bond: Osmium chemistry of a bis-σ-borane
The complex [OsHCl(≡CPh)(IPr)(PiPr3)]OTf (1; IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolylidene, OTf = CF3SO3) replaces the chloride ligand with a hydroxo group to give [OsH(OH)(≡CPh)(IPr)(PiPr3)]OTf (2), which undergoes hydroboration and hydrogenation of its metal–carbon triple bond. The hydrobora...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/118264 |
| Acceso en línea: | http://hdl.handle.net/10261/118264 |
| Access Level: | acceso abierto |
| Sumario: | The complex [OsHCl(≡CPh)(IPr)(PiPr3)]OTf (1; IPr = 1,3-bis(2,6-diisopropylphenyl)imidazolylidene, OTf = CF3SO3) replaces the chloride ligand with a hydroxo group to give [OsH(OH)(≡CPh)(IPr)(PiPr3)]OTf (2), which undergoes hydroboration and hydrogenation of its metal–carbon triple bond. The hydroboration products depend upon the reagent used. Treatment of 2 with Na[BH4] leads to the bis-σ-borane complex OsH2(η2:η2-H2BCH2Ph)(IPr)(PiPr3) (3), whereas pinacolborane (HBPin) affords the arene compound [Os(η6-C6H5CH2Bpin)H(IPr)(PiPr3)]OTf (4). The hydrogenation of the triple bond of 2 occurs under 4 atm of H2 and yields the toluene derivative [Os(η6-C6H5CH3)H(IPr)(PiPr3)]OTf (5). |
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