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The mutual neutralization of hydronium and hydroxide
- Bogot, Alon (author)
-
- Poline, Mathias, 1993- (author)
- Stockholms universitet,Fysikum
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- Ji, MingChao, 1986- (author)
- Stockholms universitet,Fysikum
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- Strasser, Daniel (author)
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- (creator_code:org_t)
- 2024
- 2024
- English.
- In: Science. - 0036-8075 .- 1095-9203. ; 383:6680, s. 285-289
- Journal article (peer-reviewed)
Abstract
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- Mutual neutralization of hydronium (H3O+) and hydroxide (OH−) ions is a very fundamental chemical reaction. Yet, there is only limited experimental evidence about the underlying reaction mechanisms. Here, we report three-dimensional imaging of coincident neutral products of mutual-neutralization reactions at low collision energies of cold and isolated ions in the cryogenic double electrostatic ion-beam storage ring (DESIREE). We identified predominant H2O + OH + H and 2OH + H2 product channels and attributed them to an electron-transfer mechanism, whereas a minor contribution of H2O + H2O with high internal excitation was attributed to proton transfer. The reported mechanism-resolved internal product excitation, as well as collision-energy and initial ion-temperature dependence, provide a benchmark for modeling charge-transfer mechanisms.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
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