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On the distinct reactivity of two isomers of [IrC4H2]+ toward methane and water

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Abstract

The gas-phase reactions of [IrC4H2]+ with methane and water have been explored by using mass spectrometry combined with quantum chemical calculations. Interestingly, under the employed conditions, two isomers of [IrC4H2]+ co-exist with different reactivity. One of them only activates methane while the other is solely reactive with water to produce CO. Apparently, upon varying the coordination patterns, the Ir center gains rather distinct capabilities of mediating the bond breaking and making processes. The reactivity toward methane mainly depends on the orbital orientation, while the π-aromaticity of the reaction complex matters for the conversion of water. The experimental and theoretical findings in this work do not only imply the promising role the Ir atom can play in the bulk-system methane conversion, but may also be instructive on how to construct a high-performance center for steam reforming of methane.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (21878265, 21603037, 21973016).

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Correspondence to Xiao-Nan Wu or Shaodong Zhou.

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Conflict of interest The authors declare no conflict of interest.

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Supporting information The supporting information is available online at http://chem.scichina.com and http://link.springer.com/journal/11426. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.

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Yuan, B., Liu, Z., Wu, XN. et al. On the distinct reactivity of two isomers of [IrC4H2]+ toward methane and water. Sci. China Chem. 65, 1720–1724 (2022). https://doi.org/10.1007/s11426-022-1342-4

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