KH2PO4 Baur W H Acta Crystallographica B29 (1973) 2726-2731 Reconstruction of local atomic environments in the disordered hydrogen-bonded crystal structures of paraelectric ammonium dihydrogen phosphate and potassium dihydrogen phosphate Note: known as KDP Note: polymorph of archerite _database_code_amcsd 0009495 7.434 7.434 6.945 90 90 90 P2_12_12_1 atom x y z K 0 0 .5 P 0 0 0 O1 .0897 .1515 .1256 O2 .1557 .9181 .8743 O3 .9262 .8568 .1303 O4 .8618 .0831 .8699 H1 .232 .146 .128 H2 .146 .776 .882