Pellets of metal ammine and its corresponding crystalline lattice

The lattice constant of the ammine is 1.019nm — Mg+2 is gray, Cl- is green, N is blue, and H is white.

source: Christensen, Claus Hviid, et al. (2005). Metal ammine complexes for hydrogen storage. Jornal of Materials Chemistry. 15. 4106-4108.