Adding rreactivity to structure-reaction dynamics in a nanometer-size oxide ion in water

Eric Villa, Christian Andre Ohlin, Edina Balogh, Travis Anderson, May Nyman, William Casey

Research output: Contribution to journalArticleResearchpeer-review

9 Citations (Scopus)

Abstract

We examine oxygen-isotope exchanges in a nanometer-size oxide molecule in water and, separately, both its rates of dissociation and molecular products. This molecule, the decaniobate ion ([H(x),Nb(10)O(28)]((6-x)-)), is at the same size scale as geochemically interesting features on minerals, such as surface polymers and kink sites on growth steps, although it is structurally quite dissimilar. Unlike mineral surface structures, however, we have complete confidence in the aqueous structure of this molecule and it yields a clear spectroscopic signature as it reacts. We thus can follow proton-enhanced isotope exchanges and base-induced dissociation in unprecedented detail and clarity.
Original languageEnglish
Pages (from-to)942 - 953
Number of pages12
JournalAmerican Journal of Science
Volume308
Issue number8
DOIs
Publication statusPublished - 2008
Externally publishedYes

Cite this