Cl4Cs3NpO2
Lychev, A.A.Mashirov, L.G.Smolin, Yu.I.Shepelev, Yu.F.
Radiokhimiya (1988) 30, 412-416
a=15.435Å b=12.796Å c=7.306Å
α=90° β=90° γ=117.23°
F5K3NpO2
Radiokhimiya (1984) 26, 255-259
a=9.129Å b=9.129Å c=18.076Å
α=90° β=90° γ=90°