H3KSi
Ring, M.A.Ritter, D.M.
Journal of Physical Chemistry (1961) 65, 182-183
a=7.15Å b=7.15Å c=7.15Å
α=90° β=90° γ=90°
BI3
Ring, M.A.Koski, W.S.Donnay, J.D.H.
Inorganic Chemistry (1962) 1, 109-111
a=7Å b=7Å c=7.46Å
α=90° β=90° γ=120°