Na2Te
Bonneau, P.R.Jarvis, R.F.jr.Kaner, R.B.
Inorganic Chemistry (1992) 31, 2127-2132
a=7.3Å b=7.3Å c=7.3Å
α=90° β=90° γ=90°
Na2S
a=6.547Å b=6.547Å c=6.547Å