This artwork depicts an artist's rendition of the α-AlO
4Al
12(OH)
24(H
2O)
127+ Keggin cluster with glycine molecules ligating the surface. The artist depicts aluminum ions as silver spheres, oxygen atoms as red spheres, carbon as black spheres, and nitrogen as green spheres (hydrogen atoms were omitted for clarity). More information, including insight on the other aluminum clusters that glycine stabilizes, can be found in the Communication by P. H.-Y. Cheong, L. Pan, W. H.
Casey et al. on
page 18682 ff.