(N H4)3 H (S O4)2

H₁₃N₃O₈S₂

Fukami, T.Horiuchi, K.Nakasone, K.Furukawa, K.

Japanese Journal of Applied Physics, Part 1 (1996) 35, 2253-2254

a=5.907Å   b=5.907Å   c=22.549Å

α=90°   β=90°   γ=120°