CmSe2
Pearson W B
Zeitschrift fur Kristallographie 171 (1985) 23-39
The Cu2Sb and related structures
_database_code_amcsd 0010898
4.096 4.096 8.369 90 90 90 P4/nmm
atom  x y   z
Se1   0 0   0
Se2  .5 0 .63
Cm   .5 0 .27