BeLiP Pearson W B Zeitschrift fur Kristallographie 171 (1985) 23-39 The Cu2Sb and related structures _database_code_amcsd 0010883 3.617 3.617 6.032 90 90 90 P4/nmm atom x y z Be 0 0 0 Li .5 0 .659 P .5 0 .219