Madelung Constants
Compound
Crystal Lattice
M
NaCl
NaCl
1.74756
CsCl
CsCl
1.76267
CaF
2
Cubic
2.51939
CdCl
2
Hexagonal
2.244
MgF
2
Tetragonal
2.381
ZnS (wurtzite)
Hexagonal
1.64132
TiO
2
(rutile)
Tetragonal
2.408
b
SiO
2
Hexagonal
2.2197
Al
2
O
3
Rhombohedral
4.1719