Methane-hydrate Kirchner M T, Boese R, Billups W E, Norman L R Journal of the American Chemical Society 126 (2004) 9407-9412 Gas hydrate single-crystal structure analyses Sample: (CH4)8(H2O)46, T = 123 K Locality: synthetic _database_code_amcsd 0019155 CELL PARAMETERS: 11.8770 11.8770 11.8770 90.000 90.000 90.000 SPACE GROUP: Pm3n X-RAY WAVELENGTH: 1.541838 Cell Volume: 1675.407 Density (g/cm3): 0.948 MAX. ABS. INTENSITY / VOLUME**2: 3.545891748 RIR: 1.217 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 10.53 6.37 8.3983 1 1 0 12 14.92 3.04 5.9385 2 0 0 6 16.69 23.95 5.3116 2 1 0 24 18.30 15.39 4.8488 2 1 1 24 23.69 2.25 3.7558 3 1 0 24 25.99 34.23 3.4286 2 2 2 8 27.07 34.20 3.2941 3 2 0 24 28.11 100.00 3.1743 3 2 1 48 30.10 6.95 2.9692 4 0 0 6 31.05 23.53 2.8806 4 1 0 24 31.97 12.66 2.7994 3 3 0 12 34.61 10.54 2.5918 4 2 1 48 35.45 4.30 2.5322 3 3 2 24 37.88 2.46 2.3754 4 3 0 24 38.66 1.26 2.3293 5 1 0 24 40.92 7.84 2.2055 4 3 2 48 44.48 25.20 2.0369 5 3 0 24 44.48 11.69 2.0369 4 3 3 24 45.16 12.20 2.0076 5 3 1 48 45.84 3.24 1.9795 4 4 2 24 45.84 8.68 1.9795 6 0 0 6 46.51 3.45 1.9526 6 1 0 24 47.17 20.41 1.9267 5 3 2 48 47.17 2.37 1.9267 6 1 1 24 48.47 3.77 1.8779 6 2 0 24 49.12 2.50 1.8549 5 4 0 24 60.92 1.28 1.5207 6 5 0 24 61.47 1.35 1.5084 6 5 1 48 63.65 1.99 1.4620 8 1 1 24 63.65 1.08 1.4620 5 5 4 24 65.25 1.44 1.4298 7 4 2 48 65.78 2.03 1.4196 6 5 3 48 66.84 1.80 1.3997 8 2 2 24 67.36 1.10 1.3901 8 3 0 24 67.89 1.17 1.3807 8 3 1 48 74.02 1.37 1.2807 6 5 5 24 76.02 1.30 1.2519 8 5 1 48 79.97 1.46 1.1998 8 5 3 48 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.