Angewandte Chemie International Edition
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Cover Picture: [Cd16In64S134]44−: 31-Å Tetrahedron with a Large Cavity (Angew. Chem. Int. Ed. 16/2003)
It begins with a single InS4 tetrahedron (blue), then, in the hierarchical structure of the [Cd16In64S134]44− ion, comes a supertetrahedron of these tetrahedra, a supertetrahedron of supertetrahedra (a super-supertetrahedron, extra Cd atoms in white), and finally a supertetrahedron of super-supertetrahedra. The yellow sphere marks a huge cavity and the Sierpinski tetrahedron the next level of the hierarchy. For more details see the Communication by O. M. Yaghi et al. on page 1819 ff.