Mg (Si F6) (H2 O)6

F₆H₁₂MgO₆Si

Syoyama, S.Osaki, K.

Acta Crystallographica B (24,1968-38,1982) (1972) 28, 2626-2627

a=6.46Å   b=9.524Å   c=8.46Å

α=90°   β=99.24°   γ=90°