C: XY2-type Compounds

SymbolStructure NameSpace Group
(Example)
Representative SubstancesDescription X: Green 
 Y: Yellow 
C1Fluorite type\(Fm\bar{3}m\)CaF2X atoms are located at the lattice points of the face-centered lattice, and Y atoms are located at the centers of the 2×2×2 sub-lattice. X is cubically surrounded by 8 Y atoms, and Y is tetrahedrally surrounded by 4 X atoms.
C2Pyrite type\(Pa\bar{3}\)FeS2
C3Cuprite\(Pn\bar{3}m\)Cu2O
C4Rutile type\(P4_2/mnm\)TiO2
C5Anatase type\(P4_1/amd\)TiO2
C6Cadmium iodide\(P\bar{3}m1\)CdI2
C7Molybdenum disulfide structureMoS2
C8β-quartz\(P6_222\)SiO2
C9β-cristobalite\(Fd\bar{3}m\)SiO2
C10β-tridymite\(P6_3/mmc\)SiO2
C11a\(I4/mmm\)CaC2
C11bMolybdenum disilicide structure\(I4/mmm\)MoSi2
C12\(R\bar{3}m\)CaSi2
C13Coccinite structure\(P4_2/nmc\)HgI2