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Updated: Jan 28, 2026
Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
Magic Numbers for the Photoelectron Anisotropy in Li-Doped Dimethyl Ether Clusters
Jonathan V Barnes1, Bruce L Yoder1, Ruth Signorell1
1ETH Zürich , Laboratory of Physical Chemistry , Vladimir-Prelog-Weg 2 , CH-8093 Zürich , Switzerland.
Abstract:
Photoelectron velocity map imaging of Li(CH3OCH3) n clusters (1 ≤ n ≤ 175) is used to search for magic numbers related to the photoelectron anisotropy. Comparison with density functional calculations reveals magic numbers at n = 4, 5, and 6, resulting from the symmetric charge distribution with high s-character of the highest occupied molecular orbital. Since each of these three cluster sizes correspond to the completion of a first coordination shell, they can be considered as "isomeric motifs of the first coordination shell". Differences in the photoelectron anisotropy, the vertical ionization energies and the enthalpies of vaporization between Li(CH3OCH3) n and Na(CH3OCH3) n can be rationalized in terms of differences in their solvation shells, atomic ionization energies, polarizabilities, metal-oxygen bonds, ligand-ligand interactions and by cooperative effects.
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