Na2HPO4*7H2O Baur W H, Khan A A Acta Crystallographica B26 (1970) 1584-1596 On the crystal chemistry of salt hydrates. VI. The crystal structures of disodium hydrogen orthoarsenate heptahydrate and of disodium hydrogen orthophosphate heptahydrate _database_code_amcsd 0009379 9.258 11.007 10.437 90 95.61 90 P2_1/n atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Na1 .1404 .1043 .4756 .00713 .00411 .00620 -.00048 .00226 -.00021 Na2 .6338 .1053 .9771 .00656 .00493 .00465 .00000 .00125 .00042 P .1024 .2633 .8955 .00342 .00287 .00265 .00024 .00000 .00042 O1 .2564 .2522 .8540 .00371 .00575 .00442 -.00072 .00100 -.00021 O2 .0997 .2492 .0403 .00713 .00534 .00332 .00096 .00075 .00042 O3 .9899 .1832 .8190 .00542 .00637 .00509 -.00096 -.00050 .00021 OH4 .5613 .0968 .3612 .00799 .00514 .00509 -.00145 .00226 -.00149 Wat5 .4759 .2542 .0572 .00599 .00534 .00531 .00024 .00050 .00000 Wat6 .8041 .2507 .0951 .00685 .00699 .00509 -.00024 .00100 .00042 Wat7 .1944 .2503 .3098 .00770 .00575 .00398 .00072 .00000 .00085 Wat8 .9212 .0232 .3518 .00742 .00802 .00597 -.00048 .00050 -.00021 Wat9 .3063 .9872 .3680 .00599 .00534 .00442 .00072 .00000 -.00042 Wat10 .4082 .0347 .8618 .00942 .00514 .00509 -.00024 -.00075 .00085 Wat11 .1781 .0046 .1085 .00856 .00555 .00487 .00121 .00150 -.00021