Na2O – Antifluorite: Interactive 3D Structure

– Na+ 4 (tetrahedral) : O2- 8 (cubic)

O2- with Na+ in all Td holes

Polyhedra – Edge-sharing , edge-sharing

Anions form the cubic close packing
while cations fill all tetrahedral holes.

Related Structure: Fluorite (CaF2)


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