Urea Guth H, Heger G, Klein S, Treutmann W, Scheringer C Zeitschrift fur Kristallographie 153 (1980) 237-254 Strukturverfeinerung von harnstoff mit neutronenbeugungsdaten bei 60, 123, 293 K und X-N- und X-X (1s2)-synthesen bei etwa 100 K Sample: T = 100 K _database_code_amcsd 0010831 CELL PARAMETERS: 5.5760 5.5760 4.6920 90.000 90.000 90.000 SPACE GROUP: P-42_1m X-RAY WAVELENGTH: 1.541838 Cell Volume: 145.883 Density (g/cm3): 1.367 MAX. ABS. INTENSITY / VOLUME**2: 9.634733053 RIR: 2.295 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 22.55 100.00 3.9428 1 1 0 4 24.80 21.78 3.5901 1 0 1 8 29.59 28.46 3.0186 1 1 1 4 32.10 6.46 2.7880 2 0 0 4 36.02 14.56 2.4937 2 1 0 8 37.52 11.98 2.3968 2 0 1 8 38.37 1.61 2.3460 0 0 2 2 40.99 4.58 2.2020 2 1 1 8 41.77 5.98 2.1624 1 0 2 8 44.96 1.90 2.0161 1 1 2 4 46.04 5.61 1.9714 2 2 0 4 50.20 6.33 1.8175 2 2 1 4 52.99 2.82 1.7280 3 0 1 8 53.64 1.63 1.7087 2 1 2 8 55.69 7.17 1.6506 3 1 1 8 61.43 1.04 1.5093 2 2 2 4 61.59 1.49 1.5059 1 0 3 8 70.47 1.58 1.3363 4 0 1 8 71.16 1.99 1.3250 2 1 3 8 71.83 2.05 1.3143 3 3 0 4 76.38 1.35 1.2468 4 2 0 8 82.43 1.55 1.1701 3 1 3 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.