As H11 N2 O8 S Boubia M, Averbuch-Pouchot M, Durif A Acta Crystallographica C41 (1985) 1562-1564 Ordered As O4 and S O4 tetrahedra in diammonium trihydrogenarsenate sulfate _cod_database_code 1007147 _database_code_amcsd 0010014 11.95 7.660 9.658 90 92.40 90 P2_1/c atom x y z As1 .17602 .1862 .42489 S1 .3224 .6841 .5702 O1 .1672 .0160 .3126 O2 .3024 .2821 .4000 O3 .1840 .0992 .5881 O4 .0664 .3131 .4075 O5 .3407 .5400 .6713 O6 .2149 .7686 .5948 O7 .3189 .6122 .4282 O8 .4149 .8092 .5863 N1 .0657 .6667 .3414 N2 .4554 .1848 .6586