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Updated: Mar 14, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Thermal Methane Activation by [Si2 O5 ].+ and [Si2 O5 H2 ].+ : Reactivity Enhancement by Hydrogenation
Xiaoyan Sun1, Shaodong Zhou1, Maria Schlangen1
1Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany.
Abstract:
The thermal reactions of methane with the oxygen-rich cluster cations [Si2 O5 ]⋅+ and [Si2 O5 H2 ]⋅+ have been examined using Fourier transform-ion cyclotron resonance (FT-ICR) mass spectrometry in conjunction with state-of-the-art quantum chemical calculations. In contrast to the inertness of [Si2 O5 ].+ towards methane, the hydrogenated cluster [Si2 O5 H2 ].+ brings about hydrogen-atom transfer (HAT) from methane with an efficiency of 28 % relative to the collision rate. The mechanisms of this process have been investigated in detail and the reasons for the striking reactivity difference of the two cluster ions have been revealed.
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