Pu
Dabos-Seignon, S.Dancausse, J.P.Heathman, S.Gering, E.Benedict, U.
Journal of Alloys Compd. (1993) 190, 237-242
a=5.437Å b=5.437Å c=4.493Å
α=90° β=90° γ=120°
NpSb
Dabos-Seignon, S.Heathman, S.Benedict, U.Spirlet, J.C.Pages, M.
Journal of the Less-Common Metals (1990) 160, 35-52
a=3.761Å b=3.761Å c=3.28Å
α=90° β=90° γ=90°
NpTe
a=3.612Å b=3.612Å c=3.612Å