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- W2028670462 abstract "Lanthanum oxide cluster cations are prepared by laser ablation and reacted with alkane molecules (n-butane and methane) in a fast flow reactor under thermal collision conditions. A reflectron time-of-flight mass spectrometer is used to detect the cluster distributions before and after the reactions. Hydrogen atom abstraction (HAA) from n-butane by (La2O3)N+ (N = 1–8, N ≠ 6) is observed, while the HAA from methane is only observed for (La2O3)5+. The experimentally determined rate constants for HAA vary significantly with the cluster sizes. Density functional theory (DFT) calculations are performed to study the structures and reactivity of (La2O3)N+ (N = 1–6) clusters. The DFT results suggest that the experimentally observed C–H bond activation by (La2O3)N+ is facilitated by oxygen-centered radicals. The position of oxygen-centered radicals binding onto the clusters can heavily influence the reactivity in C–H bond activation. This gas-phase study improves our understanding about the chemistry of oxygen-centered radicals." @default.
- W2028670462 created "2016-06-24" @default.
- W2028670462 creator A5003132203 @default.
- W2028670462 creator A5023754207 @default.
- W2028670462 creator A5041223063 @default.
- W2028670462 date "2013-08-15" @default.
- W2028670462 modified "2023-10-08" @default.
- W2028670462 title "Reactivity of Stoichiometric Lanthanum Oxide Cluster Cations in C–H Bond Activation" @default.
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- W2028670462 doi "https://doi.org/10.1021/jp4039286" @default.
- W2028670462 hasPublicationYear "2013" @default.
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