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Originally published in Science Express on 16 December 2004
Science 7 January 2005:
Vol. 307. no. 5706, pp. 93 - 96
DOI: 10.1126/science.1106719
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Reports

Observation of Large Water-Cluster Anions with Surface-Bound Excess Electrons

J. R. R. Verlet,1 A. E. Bragg,1 A. Kammrath,1 O. Cheshnovsky,2 D. M. Neumark1,3*

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.

1 Department of Chemistry, University of California, Berkeley, CA 94720, USA.
2 School of Chemistry, The Sacker Faculty of Exact Sciences, Tel-Aviv University, 69978, Israel.
3 Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

* To whom correspondence should be addressed. E-mail: dneumark{at}berkeley.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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P. Jena and A. W. Castleman Jr. (2006)
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Corrections and Clarifications.
(2005)
Science 310, 1769
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Comment on "Characterization of Excess Electrons in Water-Cluster Anions by Quantum Simulations".
J. R. R. Verlet, A. E. Bragg, A. Kammrath, O. Cheshnovsky, and D. M. Neumark (2005)
Science 310, 1769b
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Response to Comment on "Characterization of Excess Electrons in Water-Cluster Anions by Quantum Simulations".
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Characterization of Excess Electrons in Water-Cluster Anions by Quantum Simulations.
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K. Onda, B. Li, J. Zhao, K. D. Jordan, J. Yang, and H. Petek (2005)
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Science. ISSN 0036-8075 (print), 1095-9203 (online)