fig9

Figure 9. The lowest-energy structures of In_nN₂ clusters (n = 1 - 10). These structures illustrate the evolution of the geometric configurations of the clusters from n = 1 to n = 10. For clusters with n ≤ 6, the structures contain a distinct N₂ unit. In contrast, for clusters with n ≥ 7, the nitrogen atoms gradually transform to a tetrahedral coordination, and the N-N bonds weaken and eventually disappear. Reprinted with permission^[57]. Copyright 2012, Elsevier.