What question did this study set out to answer?

To evaluate the mechanisms, reactivity patterns, and catalytic potential of bare transition-metal oxide cations in activating C-H and C-C bonds of organic substrates in the gas phase.

October 2, 1995Angewandte Chemie International Edition in English

CH and CC Bond Activation by Bare Transition‐Metal Oxide Cations in the Gas Phase

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To evaluate the mechanisms, reactivity patterns, and catalytic potential of bare transition-metal oxide cations in activating C-H and C-C bonds of organic substrates in the gas phase.
Reviewed gas-phase reaction kinetics, kinetic isotope effects, and product distributions for reactions of bare transition-metal oxide cations with hydrocarbons.
Assessed catalytic cycles and multistep bimolecular transformations tracked in ion cyclotron resonance mass spectrometers.
Late transition-metal monoxide cations (MnO⁺, FeO⁺, NiO⁺, OsO⁺, and PtO⁺) activated inert C-H bonds in alkanes including methane, whereas early transition metals failed to mediate oxygen-atom transfer due to high oxophilicity.
FeO⁺ cations induced regiospecific γ-C-H bond activation in dialkylketones and mediated benzene hydroxylation that mirrored condensed-phase arene metabolism.
Ion cyclotron resonance studies demonstrated gas-phase catalytic cycles, including Pt⁺-mediated methane oxidation by O₂ and Co⁺-mediated benzene hydroxylation with N₂O.

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Implication

Mechanistic review uncovers bond activation pathways of hydrocarbons by bare transition-metal oxide cations, suggesting principles for designing tailored oxidation catalysts.

Cite This Study

Schröder et al. (1995) studied this question.

synapsesocial.com/papers/6a6fc9b3a528af2d65c32b1d https://doi.org/10.1002/anie.199519731

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Implication

Mechanistic review uncovers bond activation pathways of hydrocarbons by bare transition-metal oxide cations, suggesting principles for designing tailored oxidation catalysts.

CH and CC Bond Activation by Bare Transition‐Metal Oxide Cations in the Gas Phase

Key Points

Discussion

Implication

Cite This Study

CH and CC Bond Activation by Bare Transition‐Metal Oxide Cations in the Gas Phase

Key Points

Discussion

Implication

Cite This Study

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