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- W2051212859 abstract "The dehydrogenation reaction mechanisms of methane catalyzed by a ligated transition metal MH+ (M = Ru, Rh, and Pd) have been investigated theoretically. Activation of methane by MH+ complexes is proposed to proceed in a one-step manner via one transition state: MH+ + CH4 → MH+CH4 → [TS] → (MCH3+)H2 →MCH3+ + H2. Both high-spin and low-spin potential energy surfaces are characterized in detail. Our calculations indicate that the ground-states species have low electron spin and a dominant 4dn configuration for RuH+, RhH+, and PdH+, and the whole reaction proceeds on the ground-states potential energy surfaces with a spin-allowed manner. The MH+ (M = Ru, Rh, and Pd) complexes are expected from the general energy profiles of the reaction pathways to efficiently convert methane to metal methyl, thus RuH+, RhH+, and PdH+ are likely to be excellent mediators for the activity of methane. In the reactions of MH+ with methane, the H2 elimination from the dihydrogen complex is quite facile without barriers. The exothermicities of the reactions are close for Ru, Rh, and Pd: 11.1, 1.2, and 5.2 kcal/mol, respectively." @default.
- W2051212859 created "2016-06-24" @default.
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- W2051212859 date "2009-02-06" @default.
- W2051212859 modified "2023-10-17" @default.
- W2051212859 title "Density Functional Theory Studies of Thermal Activation of Methane by MH<sup>+</sup> (M = Ru, Rh, and Pd)" @default.
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- W2051212859 doi "https://doi.org/10.1021/jp808830c" @default.
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