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    Science. 2005 Jan 7;307(5706):93-6. Epub 2004 Dec 16.

    Observation of large water-cluster anions with surface-bound excess electrons.

    Source

    Department of Chemistry, University of California, Berkeley, CA 94720, USA.

    Abstract

    Anionic water clusters have long been studied to infer properties of the bulk hydrated electron. We used photoelectron imaging to characterize a class of (H2O)n- and (D2O)n- cluster anions (n </= 200 molecules) with vertical binding energies that are significantly lower than those previously recorded. The data are consistent with a structure in which the excess electron is bound to the surface of the cluster. This result implies that the excess electron in previously observed water-cluster anions, with higher vertical binding energies, was internally solvated. Thus, the properties of those clusters could be extrapolated to those of the bulk hydrated electron.

    PMID:
    15604360
    [PubMed]

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