NaCl
NaCl – Rocksalt, Halite, Sodium chloride: Interactive 3D Structure. CONTROLS. Coordination – 6:6 (Oh) ccp Cl – with Na + in all Oh holes. Polyhedra – Edge-sharing. NaCl 6 and ClNa 6 octahedra. All octahedral holes in a cubic close packing are occupied by counterions. Both ions show octahedral coordination (CN = 6).