Bi4Te3
Yamana, K.Kihara, K.Matsumoto, T.
Acta Crystallographica, Section B (1979) 35, 147-149
a=4.451Å b=4.451Å c=41.888Å
α=90° β=90° γ=120°
BiTe
a=4.423Å b=4.423Å c=24.002Å