Ah, simple cubic

Structural typeAh
Common namesimple cubic (sc)
Prototypeα-Po
Pearson symbolcP1
Space group221 Pm-3m Oh1
Chemical formulaA
Bondingcovalent-metallic
Atomic positions A (1a)  0  0  0
Coordination6o
PDB filesAh
Substancesα-Po, high-pressure metallic phase of V and VI elements

δ=1/sqrt(2)≈0.71