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• W4320855897 abstract "The bimolecular gas-phase reaction of ground-state atomic carbon (C(3Pj)) with disilane (Si2H6, X1A1g) was explored under single-collision conditions in a crossed molecular beam machine at a collision energy of 36.6 ± 4.5 kJ mol-1. Two channels were observed: a molecular hydrogen elimination plus Si2CH4 (reaction 1) pathway and a silane loss channel along with the formation of SiCH2 (reaction 2), with branching ratios of 20 ± 3 and 80 ± 4%, respectively. Both channels involved indirect scattering dynamics via long-lived Si2CH6 reaction intermediate(s); the latter eject molecular hydrogen and silane in molecular elimination channels within the rotational plane of the fragmenting intermediate nearly perpendicularly to the total angular momentum vector. These molecular elimination channels are associated with tight exit transition states as reflected in a significant electron rearrangement as visible from the chemical bonding in the light reaction products molecular hydrogen and silane. Once these hydrogenated silicon-carbide clusters are formed within the inner envelope of carbon stars such as of IRC + 10216, the stellar wind can drive both Si2CH4 and SiCH2 to the outside sections of the envelope, where they can be photolyzed. This is of particular importance to unravel potential formation pathways to disilicon monocarbide (Si2C) observed recently in the circumstellar shell of IRC + 10216." @default.
• W4320855897 created "2023-02-16" @default.
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• W4320855897 date "2023-02-15" @default.
• W4320855897 modified "2023-10-16" @default.
• W4320855897 title "Competing Si₂CH₄–H₂ and SiCH₂–SiH₄ Channels in the Bimolecular Reaction of Ground-State Atomic Carbon (C(³P_j)) with Disilane (Si₂H₆, X¹A_1g) under Single Collision Conditions" @default.
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• W4320855897 doi "https://doi.org/10.1021/acs.jpca.2c08417" @default.
• W4320855897 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36790335" @default.
• W4320855897 hasPublicationYear "2023" @default.
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