H10 N2 O7 P2 Averbuch-Pouchot M, Durif A European Journal of Solid State and Inorganic Chemistry 29 (1992) 191-198 Crystal structure of diammonium-dihydrogeno-diphosphate: (NH4)2H2P2O7 _cod_database_code 1007205 _database_code_amcsd 0012549 CELL PARAMETERS: 9.0580 11.1990 7.7640 90.000 108.400 90.000 SPACE GROUP: P2_1/a X-RAY WAVELENGTH: 1.541838 Cell Volume: 747.320 Density (g/cm3): 1.884 MAX. ABS. INTENSITY / VOLUME**2: 7.812889424 RIR: 1.350 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 12.01 25.24 7.3671 0 0 1 2 14.39 2.97 6.1548 0 1 1 4 15.34 2.06 5.7769 -1 1 1 4 15.83 100.00 5.5995 0 2 0 2 18.92 4.76 4.6917 1 2 0 4 19.92 9.25 4.4580 0 2 1 4 20.37 20.34 4.3589 -2 0 1 2 20.62 3.15 4.3079 -1 2 1 4 20.67 28.80 4.2975 2 0 0 2 22.16 2.93 4.0122 2 1 0 4 24.16 27.57 3.6835 0 0 2 2 24.18 1.36 3.6804 1 2 1 4 24.42 6.00 3.6449 -1 1 2 4 25.46 1.86 3.4991 0 1 2 4 25.90 37.69 3.4396 -2 2 1 4 26.14 31.68 3.4092 2 2 0 4 26.44 2.71 3.3716 -2 0 2 2 27.12 5.76 3.2878 2 0 1 2 27.63 2.97 3.2285 -2 1 2 4 28.29 1.67 3.1546 2 1 1 4 29.02 43.37 3.0774 0 2 2 4 30.33 14.99 2.9469 1 1 2 4 30.76 3.62 2.9072 -3 1 1 4 31.55 3.63 2.8353 -2 3 1 4 31.56 2.00 2.8352 2 2 1 4 31.97 17.90 2.7998 0 4 0 2 33.42 4.81 2.6815 1 2 2 4 33.67 1.22 2.6621 1 4 0 4 33.81 13.64 2.6515 -3 2 1 4 34.20 2.41 2.6220 0 3 2 4 34.26 1.85 2.6171 0 4 1 4 34.69 1.14 2.5857 -1 4 1 4 35.19 4.45 2.5505 3 2 0 4 35.94 23.18 2.4988 -2 0 3 2 36.41 2.81 2.4673 2 3 1 4 36.80 1.52 2.4426 -3 2 2 4 36.81 3.80 2.4417 2 0 2 2 37.01 1.91 2.4289 1 4 1 4 38.07 4.11 2.3640 1 3 2 4 38.37 3.05 2.3458 2 4 0 4 39.49 1.67 2.2819 -2 2 3 4 39.66 1.73 2.2728 3 3 0 4 39.79 3.99 2.2653 -1 4 2 4 39.82 2.22 2.2638 -4 0 1 2 40.55 5.27 2.2246 3 2 1 4 41.43 1.43 2.1794 -4 0 2 2 42.12 1.64 2.1455 1 1 3 4 42.53 1.18 2.1256 -1 5 1 4 43.38 2.32 2.0860 -3 2 3 4 43.59 1.46 2.0765 -2 3 3 4 44.18 2.02 2.0501 -3 4 1 4 45.29 1.60 2.0024 3 4 0 4 46.60 1.10 1.9489 -3 4 2 4 46.61 2.08 1.9487 3 1 2 4 47.82 1.15 1.9020 -1 1 4 4 48.79 1.00 1.8665 0 6 0 2 48.81 1.40 1.8658 3 2 2 4 48.85 1.17 1.8643 -2 4 3 4 49.49 2.00 1.8418 0 0 4 2 49.53 1.23 1.8402 2 4 2 4 53.33 1.39 1.7178 -5 2 1 4 53.40 2.62 1.7158 -2 6 1 4 53.53 5.49 1.7120 2 6 0 4 54.43 1.25 1.6858 -4 0 4 2 54.79 2.42 1.6756 1 1 4 4 55.17 1.13 1.6650 0 6 2 4 55.93 1.34 1.6439 4 0 2 2 56.76 1.47 1.6220 1 2 4 4 57.05 1.78 1.6142 -4 2 4 4 57.28 1.30 1.6083 -5 2 3 4 58.52 1.59 1.5773 4 2 2 4 59.56 1.52 1.5522 -2 0 5 2 60.91 1.46 1.5209 -1 1 5 4 61.65 1.72 1.5045 -5 1 4 4 62.05 1.99 1.4958 -2 2 5 4 62.65 1.64 1.4829 2 6 2 4 64.73 1.52 1.4401 -4 6 1 4 68.43 1.10 1.3710 1 1 5 4 69.73 1.80 1.3486 -4 6 3 4 70.61 1.58 1.3340 4 6 1 4 70.79 1.00 1.3310 2 8 0 4 70.87 1.45 1.3297 6 0 1 2 73.15 1.35 1.2937 6 2 1 4 74.79 1.04 1.2693 -3 8 1 4 78.81 1.17 1.2144 2 8 2 4 80.71 1.45 1.1906 -4 8 1 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.