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Issue 48, 2017
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Protonation of N2O and NO2 in a solid phase

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Abstract

Adsorption of gaseous N2O on the acidic surface Brønsted centers of the strongest known solid acid, H(CHB11F11), results in formation of the N≡N–OH+ cation. Its positive charge is localized mainly to the H-atom, which is H-bonded to the CHB11F11 anion forming an asymmetric proton disolvate of the L1–H+⋯L2 type, where L1 = N2O and L2 = CHB11F11. NO2 protonation under the same conditions leads to the formation of the highly reactive cation radical NO2+, which reacts rapidly with an NO2 molecule according to the equation N2OH+ + NO2 → [N2O4H+] → N2OH+ + O2 resulting in the formation of two types of N2OH+ cations: (i) a typical Brønsted superacid, N[triple bond, length as m-dash]N–OH+, with a strongly acidic OH group involved in a rather strong H-bond with the anion, and (ii) a typical strong Lewis acid, N[triple bond, length as m-dash]N+–OH, with a positive charge localized to the central N atom and ionic interactions with the surrounding anions via the charged central N atom.

Graphical abstract: Protonation of N2O and NO2 in a solid phase

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Publication details

The article was received on 04 Jul 2017, accepted on 23 Nov 2017 and first published on 23 Nov 2017


Article type: Paper
DOI: 10.1039/C7CP04474G
Citation: Phys. Chem. Chem. Phys., 2017,19, 32733-32740
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    Protonation of N2O and NO2 in a solid phase

    E. S. Stoyanov and I. V. Stoyanova, Phys. Chem. Chem. Phys., 2017, 19, 32733
    DOI: 10.1039/C7CP04474G

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