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J Phys Chem A. 2008 Jul 31;112(30):7027-34. doi: 10.1021/jp800269s. Epub 2008 Jul 2.

Hydrated electron production by reaction of hydrogen atoms with hydroxide ions: a first-principles molecular dynamics study.

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CEA/Saclay, DSM/IRAMIS/SCM URA-331 CNRS, F-91191 Gif-sur-Yvette Cedex, France.


The solvated electron production by reaction between the H atom and the hydroxide anion was studied using Density Functional Theory based first-principles molecular dynamics. The simulation reveals a complex mechanism, controlled by proton transfers in the coordination sphere of the hydroxide and by the diffusion of the H atom in its solvent cavity. We formulate the hypothesis, based on a coupling between classical and first-principles molecular dynamics, that these two processes give rise to a lag time for the reaction that would explain the H atom extremely small reactivity compared to other radical species. Furthermore, the reaction observed gives an original insight in excess electron solvation.


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