1.7 Compounds based on FCC Packing of ions

In these structures, typically anions form the FCC lattice and cations fill tetrahedral or octahedral sites in most cases, although in some cases, some other co-ordination may be preferred. Here we will discuss the following structures:

• Rocksalt structures with NaCl as parent compound

• Fluorite and anti-fluorite structures based on CaF₂ and Na₂O

• Zinc Blende or Sphalerite structure based on ZnS

• Spinel structure based of formula AB₂O₄