Alkali halide cluster dianions: metastability and threshold sizes

  • J. Friedrich
  • P. Weis
  • J. Kaller
  • R.L. Whetten
  • M.M. Kappes
Regular paper

DOI: 10.1007/s100530050438

Cite this article as:
Friedrich, J., Weis, P., Kaller, J. et al. Eur. Phys. J. D (1999) 9: 269. doi:10.1007/s100530050438

Abstract.

Singly and multiply charged salt clusters (MnXn±m±m; MX = alkali halide) can be generated simply by spraying saline solutions, with or without electrical (charging) field. Dianion species (m=2) show a clear threshold size at n=5-7 (range) for all elements beyond the first row. These sizes (12-16 atoms) are much smaller than previously observed for alkali halides and are among the smallest cluster dianions yet found in gas phase. We describe the experiment and discuss the onsets in terms of ab initio density functional calculations on a number of representative sodium chloride cluster mono- and dianions.

PACS: 36.40.Qv Stability and fragmentation of clusters 

Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 1999

Authors and Affiliations

  • J. Friedrich
    • 1
  • P. Weis
    • 1
  • J. Kaller
    • 1
  • R.L. Whetten
    • 1
  • M.M. Kappes
    • 1
  1. 1.Institut für Physikalische Chemie, Universität Karlsruhe, D-76128 Karlsruhe, GermanyDE

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