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 1001662 _database_code_amcsd 0009889 7.9041 5.7035 11.4442 90 90 90 Pmcn atom x y z Pb1 .0062 .7887 .1464 Mg1 .25 .7537 .3780 W1 .25 .2569 .1136 O1 .4910 .2298 .1340 O2 .25 .0135 .0032 O3 .25 .4974 .0097 O4 .25 -.0253 .2359 O5 .25 .4629 .2514