H11 N2 O8 P S Averbuch-Pouchot M Materials Research Bulletin 16 (1981) 407-411 Hydrogen bonding in (N H4) (H S O4) (N H4) (H2 P O4) _cod_database_code 1008248 _database_code_amcsd 0016170 7.723 7.540 7.482 90 101.32 90 P2_1/n atom x y z occ S1 .2506 .1812 .1031 .5 P1 .2506 .1812 .1031 .5 O1 .3317 .3049 .9903 O2 .1599 .0299 .9882 O3 .1136 .2699 .1929 O4 .3930 .1031 .2505 N1 .2128 .1733 .6060 H1 .224 .056 .583 H2 .102 .203 .557 H3 .263 .231 .545 H4 .247 .193 .752 H5 .429 .519 .502 .5 H6 .113 .438 .224