LaS
Steiger, R.P.Cater, E.D.
High Temperature Science (1970) 2, 398-401
a=5.854Å b=5.854Å c=5.854Å
α=90° β=90° γ=90°
SSc
a=5.166Å b=5.166Å c=5.166Å
SY
a=5.4873Å b=5.4873Å c=5.4873Å
S2ScY
a=5.3138Å b=5.3138Å c=5.3138Å