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Reversible β-hydride elimination of amine ligands forming stable cis-η-iminium hydride Os complexes |
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| Authors: | Stephen D. Orth Joseph Barrera Steven M. Rowe Lisa E. Helberg W. Dean Harman |
| Affiliation: | Department of Chemistry, University of Virginia, Charlottesville, VA 22901, USA |
| Abstract: | Octahedral tetraammineosmium(II) species are generated from their OsIII precursors containing an amine ligand cis to a labile alcohol or triflate. These compounds undergo reversible β-hydride eliminations resulting in the formation of cis-η2-iminium hydride complexes. Judging from NMR data, the η2-iminium group in these products lies parallel to the osmium-hydride bond with the iminium carbon eclipsing the hydride. Attempts to form η2-arene complexes of an OsII ammine system bearing a stereogenic carbon are also described. |
| Keywords: | β-Hydride elimination Osmium complexes Amine complexes |
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