USbSe Pearson W B Zeitschrift fur Kristallographie 171 (1985) 23-39 The Cu2Sb and related structures _database_code_amcsd 0010901 4.173 4.173 8.681 90 90 90 P4/nmm atom x y z U 0 0 0 Se .5 0 .6315 Sb .5 0 .2885