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- W1979843036 abstract "The new complex TpBr3Ir(C2H4)2, 1, photochemically activates the C−H bonds of n-pentane in a two-step process, the first one being the formation of an isolable alkyl-hydride intermediate of composition TpBr3Ir(H)(C2H4)(C5H11), 3a, that subsequently undergoes β-hydride elimination to generate a terminal olefin complex, TpBr3Ir(H)2(C5H10), 4a. The reaction can also be extended to diethyl ether. In this case, the reaction proceeds by the activation of one of the β-C−H bonds (with respect to the O-ether atom) with formation of the alkyl-hydride 3b and the dehydrogenation product 4b. These processes also compete with the intramolecular C−H activation of one of the coordinated ethylene ligand by the Ir(I) center in 1, which affords the hydride-vinyl complex TpBr3Ir(H)(CHCH2)(C2H4), 2. Attempts to thermally induce the above transformations has led to the exclusive formation of a mixture of the hydride-α,ω-butenyl complex TpBr3Ir(H)(CH2CH2CHCH2), 5, and the hydride-crotyl complex TpBr3Ir(H)(C4H7), 6." @default.
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- W1979843036 date "2004-03-30" @default.
- W1979843036 modified "2023-10-17" @default.
- W1979843036 title "Alkane Dehydrogenation by Sequential, Double C−H Bond Activation by Tp<sup>Br3</sup>Ir(C<sub>2</sub>H<sub>4</sub>)<sub>2</sub> (Tp<sup>Br3</sup> = hydrotris(3,4,5-tribromo)pyrazolylborate)" @default.
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- W1979843036 doi "https://doi.org/10.1021/om034242u" @default.
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