Wurtzite ZnS

Unit cell

Lattice constants

a = 3.820 Å, b = 3.820 Å, c = 6.260 Å; α = 90°, β = 90°, γ = 120°

Cell volume

79.1 ų

Atoms in the cell

4 (Zn 2, S 2)

Formula units Z

2

Calculated density

4.09 g cm⁻³

Shortest contact

2.340 Å

Coordination

Zn

CN 4 at 2.34 Å (4 S)

S

CN 4 at 2.34 Å (4 Zn)

About the structure

• hcp array of S²⁻ with Zn²⁺ in half of the tetrahedral holes — the hcp counterpart of zinc blende.
• Coordination 4:4; all tetrahedra point the same way along c, so the structure is polar.
• ZnO, AlN, GaN, CdS, BeO adopt this structure.

Atom positions (fractional, one cell)

Z, coordination numbers, distances, density and packing on this page are computed from these coordinates.