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 1001661 _database_code_amcsd 0009888 7.9440 5.6866 11.4059 90 90 90 Pmcn atom x y z Pb1 .0032 .7804 .1422 Mg1 .25 .7519 .3772 W1 .25 .2577 .1161 O1 .4907 .2365 .1314 O2 .25 .0133 .0027 O3 .25 .4991 .0103 O4 .25 -.0153 .2370 O5 .25 .4745 .2491