K2SO4 Ojima K, Nishihata Y, Sawada A Acta Crystallographica B51 (1995) 287-293 Structure of potassium sulfate at temperatures from 296K down to 15K _cod_database_code 1200012 _database_code_amcsd 0018288 5.7704 10.0712 7.4776 90 90 90 Pmcn atom x y z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) K1 .25 .08935 .17398 .0169 .0197 .0164 0 0 .0006 K2 .25 .79550 .48915 .0185 .0150 .0132 0 0 -.0005 S1 .25 .41985 .23295 .0101 .0095 .0101 0 0 -.0005 O1 .25 .4162 .0368 .0382 .0318 .0089 0 0 -.0019 O2 .25 .5585 .2976 .0254 .0120 .0210 0 0 -.0044 O3 .0412 .3522 .3017 .0140 .0227 .0298 -.0063 .0032 .0052