Acetylene-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: (C2H2)7.2(H2O)46, T = 143 K
      Locality: synthetic
      _database_code_amcsd 0019156

      CELL PARAMETERS:   11.8950  11.8950  11.8950   90.000   90.000   90.000
      SPACE GROUP: Pm3n      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1683.036
      Density (g/cm3):      1.008
      MAX. ABS. INTENSITY / VOLUME**2:      3.509796801    
      RIR:      1.134
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.90          3.03        5.9475    2   0   0         6
                16.67          9.82        5.3196    2   1   0        24
                18.27         12.03        4.8561    2   1   1        24
                23.65          4.61        3.7615    3   1   0        24
                25.95         42.13        3.4338    2   2   2         8
                27.03         42.03        3.2991    3   2   0        24
                28.07        100.00        3.1791    3   2   1        48
                30.05          8.96        2.9738    4   0   0         6
                31.00         23.97        2.8850    4   1   0        24
                31.92         10.59        2.8037    3   3   0        12
                34.55          7.01        2.5957    4   2   1        48
                35.39          3.98        2.5360    3   3   2        24
                37.82          2.12        2.3790    4   3   0        24
                38.59          1.56        2.3328    5   1   0        24
                40.85          6.32        2.2088    4   3   2        48
                44.41         23.74        2.0400    5   3   0        24
                44.41         11.45        2.0400    4   3   3        24
                45.09         10.59        2.0106    5   3   1        48
                45.77          2.80        1.9825    4   4   2        24
                45.77          7.46        1.9825    6   0   0         6
                46.44          2.61        1.9555    6   1   0        24
                47.10         17.95        1.9296    5   3   2        48
                47.10          2.15        1.9296    6   1   1        24
                48.40          3.98        1.8808    6   2   0        24
                49.04          2.53        1.8577    5   4   0        24
                49.04          1.02        1.8577    6   2   1        48
                60.82          1.26        1.5230    6   5   0        24
                63.54          1.99        1.4642    8   1   1        24
                65.14          1.58        1.4320    7   4   2        48
                65.67          2.01        1.4217    6   5   3        48
                66.72          1.52        1.4018    8   2   2        24
                73.89          1.02        1.2827    6   5   5        24
                75.88          1.21        1.2538    8   5   1        48
                79.82          1.11        1.2016    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.