Si O2

O₂Si

Schlenker, J.L.Dwyer, F.G.Jenkins, E.E.Kokotailo, G.T.Rohrbaugh, W.J.Meier, W.M.

Nature (London) (1981) 294, 340-342

a=19.36Å   b=19.36Å   c=19.36Å

α=90°   β=90°   γ=90°