Figure 1
From: A novel class of oxynitrides stabilized by nitrogen dimer formation

The four polymorphs of SnO2. The highlighted octahedra show the polyhedral connectivity, with corner-sharing octahedra in fluorite.
From: A novel class of oxynitrides stabilized by nitrogen dimer formation
The four polymorphs of SnO2. The highlighted octahedra show the polyhedral connectivity, with corner-sharing octahedra in fluorite.