Resources written by Chas McCaw for sixth form chemistry teaching and beyond.
General interest:
Graphite Buckminsterfullerene Ice White phosphorus Benzene Cyclohexane AdamantaneCubic:
Sodium Caesium chloride Polonium Copper Halite Fluorite Antifluorite Zinc blende DiamondNon-cubic:
Hexagonal:
Magnesium WurtziteTetragonal:
RutileTrigonal:
α-quartzTriclinic:
Copper(II) sulfateOrthorhombic:
α-SulfurMonoclinic:
β-SulfurThe structure to the left shows that the unit cell takes up two neighbouring segments of the six segments within the A layer hexagonal structure. One of these segments contains an atom from the B layer. Remember that the A and B layers are equivalent.
The remaining magnesium pages take a more advanced approach. The next page shows the hexagonal channels within the magnesium structure.