H15 O46 P W12 Brown G, Noe-Spirlet M, Busing W, Levy H Acta Crystallographica B33 (1977) 1038-1046 Dodecatungstophosphoric acid hexahydrate, (H5 O2)3 (P W12 O40), the true structure of Keggin's 'pentahydrate' from single crystal X-ray and neutron diffraction data _cod_database_code 1008011 _database_code_amcsd 0015959 12.506 12.506 12.506 90 90 90 *Pn3m .25 .25 .25 atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) P1 .75 .75 .75 .0137 .0137 .0137 0 0 0 W1 .75821 .95680 .95680 .02 .017 .017 .000 .000 -.0058 O1 .82252 .82252 .82252 .018 .018 .018 -.0013 -.0013 -.0013 O2 .65617 .84383 .99326 .0163 .0163 .0192 -.006 .0003 -.0003 O3 .87223 .87223 .02398 .0199 .0199 .0175 .0047 -.0087 -.0087 O4 .73311 .05452 .05452 .0327 .0315 .0315 -.0015 -.0015 -.0158 O5 .75 .15472 .25 .5 .12 .0552 .0371 0 -.0124 0 H1 .74503 .10148 .191 .5 .0708 .0708 .0708 0 0 0 H2 .75 .25 .25 .0552 .0552 .0552 0 0 0