NH4H2AsO4 Khan A A, Baur W H Acta Crystallographica B29 (1973) 2721-2726 Refinement of the crystal structures of ammonium dihydrogen phosphate and ammonium dihydrogen arsenate Note: known as ADA _database_code_amcsd 0009494 CELL PARAMETERS: 7.6998 7.6998 7.7158 90.000 90.000 90.000 SPACE GROUP: I-42d X-RAY WAVELENGTH: 1.541838 Cell Volume: 457.446 Density (g/cm3): 2.308 MAX. ABS. INTENSITY / VOLUME**2: 45.17328562 RIR: 6.373 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 16.26 100.00 5.4502 1 0 1 8 23.10 38.81 3.8499 2 0 0 4 28.35 50.64 3.1478 1 1 2 4 28.38 16.31 3.1445 2 1 1 8 32.87 2.97 2.7251 2 0 2 8 32.90 10.72 2.7223 2 2 0 4 36.91 3.94 2.4354 3 0 1 8 36.92 1.28 2.4349 3 1 0 8 43.94 9.45 2.0606 2 1 3 8 43.97 22.62 2.0591 3 1 2 8 44.00 6.01 2.0582 3 2 1 8 47.22 1.53 1.9250 4 0 0 4 50.22 2.12 1.8167 3 0 3 8 50.27 2.35 1.8151 4 1 1 8 53.10 5.32 1.7246 2 0 4 8 53.20 4.81 1.7217 4 2 0 8 55.97 2.63 1.6430 3 2 3 8 56.00 4.35 1.6422 3 3 2 4 58.66 4.44 1.5739 2 2 4 4 61.35 3.22 1.5111 4 1 3 8 61.39 2.14 1.5102 4 3 1 8 66.38 2.15 1.4082 2 1 5 8 66.49 4.55 1.4062 5 1 2 8 66.51 2.22 1.4059 5 2 1 8 68.91 3.45 1.3626 4 0 4 8 69.00 1.38 1.3611 4 4 0 4 71.39 1.15 1.3212 5 0 3 8 71.39 1.10 1.3212 4 3 3 8 73.77 3.23 1.2845 4 2 4 8 76.05 1.36 1.2515 1 1 6 4 76.20 2.81 1.2493 5 3 2 8 76.22 1.58 1.2491 6 1 1 8 78.58 1.73 1.2174 6 2 0 8 80.79 1.20 1.1896 4 1 5 8 80.91 1.23 1.1882 5 4 1 8 85.37 1.93 1.1371 3 1 6 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.