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Catalytic Metal-Free Deoxygenation of Nitrous Oxide with Disilanes

Lucile Anthore-Dalion 1 Emmanuel Nicolas 1 Thibault Cantat 1
1 LCMCE - Laboratoire de Chimie Moléculaire et de Catalyse pour l'Energie (ex LCCEF)
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : Because of its high kinetic stability, conditions to reduce the greenhouse gas N2O are limited; therefore, a better understanding of N2O chemistry and N–O bond cleavage is required. In this work, N2O was deoxygenated under metal-free conditions. Using disilanes as reducing agents and a catalytic amount of fluoride anions or alkoxides allowed a mild reduction at ambient pressure and temperature. DFT calculations unveiled the mechanism, which shows a nucleophilic addition of a silyl anion to the central N atom of N2O and release of N2 from a pseudo-Brook rearrangement.
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https://hal-cea.archives-ouvertes.fr/cea-02372787
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Submitted on : Wednesday, November 20, 2019 - 3:50:59 PM
Last modification on : Monday, February 10, 2020 - 6:13:58 PM

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Lucile Anthore-Dalion, Emmanuel Nicolas, Thibault Cantat. Catalytic Metal-Free Deoxygenation of Nitrous Oxide with Disilanes. ACS Catalysis, American Chemical Society, 2019, 9, pp.11563-11567. ⟨10.1021/acscatal.9b04434⟩. ⟨cea-02372787⟩

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