Interaction between liquid water and hydroxide revealed by core-hole de-excitation

Emad F. Aziz, Niklas Ottosson, Manfred Faubel, Ingolf V. Hertel and Bernd Winter ()
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Emad F. Aziz: BESSY GmbH, Albert-Einstein-Strasse 15, D-12489 Berlin, Germany
Niklas Ottosson: BESSY GmbH, Albert-Einstein-Strasse 15, D-12489 Berlin, Germany
Manfred Faubel: Max-Planck-Institut für Dynamik und Selbstorganisation, Bunsenstrasse 10, D-37073 Göttingen, Germany
Ingolf V. Hertel: Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Strasse 2a, D-12489 Berlin, Germany
Bernd Winter: Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Strasse 2a, D-12489 Berlin, Germany

Nature, 2008, vol. 455, issue 7209, 89-91

Abstract: The hydroxide ion: passing bonds Even though the hydroxide ion plays an important role in many chemical and biochemical processes, we still don't fully understand how it interacts with surrounding water molecules. To address this question, Azis et al. have measured core-level photoelectron emission and intermolecular Coulombic decay for an aqueous hydroxide solution. The results show that in contrast to hydrated protons, hydrated hydroxide ions can transiently donate a hydrogen bond to surrounding water molecules. This capability can explain the unusual and fast transport of hydroxide ions in water, and also highlights that the solvation pattern and transport mechanism of water's two ions cannot be inferred from each other.

Date: 2008
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DOI: 10.1038/nature07252

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