Cu1.78Se
Danilkin, S.A.Skomorokhov, A.N.Rajevac, V.Hoser, A.Fuess, H.Bickulova, N.N.
Journal of Alloys Compd. (2003) 361, 57-61
a=5.7464Å b=5.7464Å c=5.7464Å
α=90° β=90° γ=90°