Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 18, Issue 14, Pages 9524-9536Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6cp00290k
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Funding
- Norwegian Research Council [205512/F20]
- Nano-solvation in Hydrogen-Bonded Clusters [179568/V30]
- Norwegian Supercomputing Program (NOTUR) [NN4654K]
- Spanish MINECO-FEDER [CTQ2013-44303-P, CTQ2014-51912-REDC]
- NILS Project [002-ABEL-CM-2013]
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The reactions of HO2-(H2O)(n) and O-2(center dot-) (H2O)(n) clusters (n = 0-4) with NO center dot were studied experimentally using mass spectrometry; the experimental work was supported by quantum chemical computations for the case n = 0, 1. It was found that HO2- (H2O)(n) clusters were efficient in oxidizing NO center dot into NO2-, although the reaction rate decreases rapidly with hydration above n = 1. Superoxide-water clusters did not oxidize NO center dot into NO2- under the present experimental conditions (low pressure): instead a reaction occurred in which peroxynitrite, ONOO, was formed as a new cluster core ion. The latter reaction was found to need at least one water molecule present on the reactant cluster in order to enable the product to stabilize itself by evaporation of H2O.
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