Cluster of framework considerations for the structures of Tl7Sb2, -Mn, Cu5Zn8 and their variants Li22Si51, Cu41Sn11, Sm11Cd45, Mg6Pd and Na6Tl with octuple unit cells
Abstract
Eight intermetallic compounds described so far by clusters are compared. It is shown that a common framework exists for all these crystal structures. The voids within this common part are filled in different ways. Moreover, for each of these crystal structures all atoms together form a three-dimensional connected framework. Therefore, the framework description seems to be more adequate than the cluster description.