Arsenstruvite Ferraris G, Franchini-Angela M Acta Crystallographica B29 (1973) 859-863 Hydrogen bonding in the crystalline state. Refinement of the crystal structure of MgNH4AsO4*6(H2O), arsenstruvite Locality: synthetic _database_code_amcsd 0009477 7.054 6.205 11.368 90 90 90 Pmn2_1 atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) As 0 -.00588 -.00050 .006029 .00655 .00218 0 0 -.00010 Mg 0 .3733 .3717 .006431 .00811 .00259 0 0 -.00010 O1 0 -.0236 -.1490 .012711 .01519 .00247 0 0 -.00031 O2 0 -.2563 .0574 .009154 .00727 .00356 0 0 .00085 O3 .1972 .1234 .0444 .007938 .01201 .00356 -.00097 -.00012 -.00138 OW1 0 .6762 .2889 .024669 .01181 .00328 0 0 .00152 OW1 0 .0757 .4597 .006632 .01857 .00920 0 0 .00786 OW3 .2165 .2663 .2625 .011556 .01818 .00296 .00308 -.00024 -.00141 OW4 .2062 .4789 .4863 .012561 .01207 .00433 .00028 -.00573 -.00198 N 0 .3694 .7312 .018640 .01785 .00408 0 0 .00209 H1 0 .270 .771 1.0 H2 0 .684 .204 1.3 H3 0 .799 .318 2.8 H4 .115 .023 .485 2.1 H5 .178 .187 .213 4.8 H6 .236 .637 .506 6.8 H7 .294 .200 .302 .5 H8 .315 .380 .529 2.2 H9 .080 .350 .681 .75 5.0 H10 .085 .450 .740 .75 5.4