Figure 1

The lowest energy structures of neutral, cationic and anionic Cun+1 and CunS (n = 1–12) clusters. The purple and black balls represent sulfur and copper atoms, respectively.
The lowest energy structures of neutral, cationic and anionic Cun+1 and CunS (n = 1–12) clusters. The purple and black balls represent sulfur and copper atoms, respectively.