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Lukas An der Lan, Peter Bartl, Christian Leidlmair, Roland Jochum, Dr. Stephan Denifl, Prof. Dr. Olof Echt and Prof. Dr. Paul Scheier Solvation of Na+, K+, and Their Dimers in Helium Chemistry - A European Journal 18

Version of Record online: 28 FEB 2012 | DOI: 10.1002/chem.201103432

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How many? Alkali metal ions solvated in liquid helium form tightly bound snowballs. Calculations for sodium and potassium reveal distinct solvation shells but do not quite agree on the exact number (n) of atoms in the first shell. Mass spectra of doped helium droplets suggest that theoretical n values for Na+ and K+ are slightly too large. However, theoretical dissociation energies for helium attached to Na2+ agree very well with experimental values (see figure).

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