Mg O6 Pb2 W Baldinozzi G, Sciau P, Pinot M, Grebille D Acta Crystallographica B51 (1995) 668-673 Crystal structure of the antiferroelectric perovskite Pb2 Mg W O6 _cod_database_code 1001660 _database_code_amcsd 0009887 8.0058 8.0058 8.0058 90 90 90 Fm3m atom x y z occ Pb1 .2729 .2729 .25 .0833 Mg1 .5 .5 .5 W1 0 0 0 O1 .2398 .0229 .004 .125