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Evidence for the Formation of Terminal Hydrides by Protonation of an Asymmetric Iron Hydrogenase Active Site Mimic

Abstract : Treatment of [Fe2(μ-pdt)(CO)6] [pdt = S(CH2)3S] with dppe (Ph2PCH2CH2PPh2) in refluxing toluene affords the asymmetric complex [Fe2(μ-pdt)(CO)4(dppe)] (1). Protonation of 1 with HBF4−Et2O in CH2Cl2 gives at room temperature the μ-hydrido derivative [Fe2(μ-pdt)(CO)4(dppe)(μ-H)](BF4) (2). Monitoring the reaction by 1H, 31P, and 13C NMR at low temperature reveals unambiguously that the process of the protonation of 1 implies terminal hydride intermediates.
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https://hal.univ-brest.fr/hal-01581352
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Submitted on : Monday, September 4, 2017 - 3:12:04 PM
Last modification on : Thursday, October 3, 2019 - 8:50:07 AM

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Salah Ezzaher, Jean-François Capon, Frederic Gloaguen, François Y. Pétillon, Philippe Schollhammer, et al.. Evidence for the Formation of Terminal Hydrides by Protonation of an Asymmetric Iron Hydrogenase Active Site Mimic. Inorganic Chemistry, American Chemical Society, 2007, 46 (9), pp.3426 - 3428. ⟨10.1021/ic0703124⟩. ⟨hal-01581352⟩

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