(C14 N2 H30) (Si18 O36 (O H)2) (H2 O)2

C₁₄O₃₈Si₁₈

Burton, A.Accardi, R.J.Lobo, R.F.Deem, M.W.Falcioni, M.

Chemistry of Materials (1,1989-) (2000) 12, 2936-2942

a=7.386Å   b=22.45399Å   c=14.018Å

α=90°   β=90°   γ=90°