Svendsen A, Bluhme H, El Ghazaly MOA, Seiersen K, Brøndsted Nielsen S, Andersen LH. Tuning the continuum ground state energy of NO2- 2 by water molecules.
PHYSICAL REVIEW LETTERS 2005;
94:223401. [PMID:
16090391 DOI:
10.1103/physrevlett.94.223401]
[Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2004] [Indexed: 05/03/2023]
Abstract
Electron scattering on NO-2, NO-2 x (H2O), and NO-2 x (H2O)(2) was performed in two storage rings. We confirm the presence of earlier reported NO2-2 dianion resonances and show that they remain when water is attached. Importantly, hydration tunes the energy: each water molecule lowers the ground state energy by 0.8 +/- 0.3 eV relative to the monoanion. NO2-2 is observed to decay by two-electron emission, possibly in combination with fragmentation. NO(2-)2 x (H2O) mainly decays into NO-2 + H2O + e(-).
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