Angewandte Chemie International Edition

Cover image for Vol. 56 Issue 19

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPhotoChem, ChemPlusChem, Zeitschrift für Chemie

Cover Picture (Angew. Chem. Int. Ed. Engl. 8/1990)

29_08/1990The cover picture shows the structure of a hemisphere of the cluster shell {V18O42} with effective ionic radii and view along the virtual S8-axis. The central iodide ion (violet) in this negatively charged cage is surrounded by 18 vanadium atoms (blue) and 24 oxygen atoms (red). In place of the iodide, an ion with distinctly smaller radius, e.g. chloride or bromide, can also be encapsulated. The 18/24 spherical shell apppears to be of general significance for such encapsulations, the oxygen atoms being able to form both one of the 13 Archimedean solids as well as the so-called 14th Archimedean solid. More about the preparation and structure of such hollow spherical compounds with the amazing property of being able to encapsulate negative ions is reported by A. Müller et al. on p. 926.

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