Synthesis, characterization, and crystal structures of the osmium triflate complexes Cp∗Os(P–P)(OTf) and [Cp∗Os(P–P)(OH2)][OTf]

Add time:08/06/2019    Source:sciencedirect.com

Treatment of the osmium(II) hydrides Cp∗Os(P–P)H (Cp∗ = pentamethylcyclopentadienyl) with methyl trifluoromethanesulfonate (MeOTf) affords osmium(II) triflate complexes with the general formula Cp∗Os(P–P)(OTf), where P–P = bis(dimethylphosphino)methane (dmpm), bis(diphenylphosphino)methane (dppm), or 1,2-bis(dimethylphosphino)ethane (dmpe). The aqua complexes [Cp∗Os(dmpm)(OH2)][OTf] and [Cp∗Os(dppm)(OH2)][OTf] are synthesized by the addition of water to the corresponding anhydrous triflates. The complexes Cp∗Os(dppm)(OTf) and [Cp∗Os(dmpm)(OH2)][OTf] have been examined crystallographically, and all compounds have been characterized by NMR spectroscopy.

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