On the Size of Ions Solvated in Helium Clusters (pages 7101–7108)
Filipe Ferreira da Silva, Philipp Waldburger, Stefan Jaksch, Andreas Mauracher, Stephan Denifl, Olof Echt, Tilmann D. Märk and Paul Scheier
Version of Record online: 16 JUN 2009 | DOI: 10.1002/chem.200802554
How large are they? The size of ions depends on the solvent. What's their size when solvated in liquid helium (see picture)? Mass spectra of halogen anions, cations, and molecular cations complexed with helium atoms exhibit conspicuous abundance drops when the number of helium atoms reaches a value characteristic for each ion, indicating closure of a solvation shell. Ionic radii are deduced from these values.