CO2
      Park J H, Yoo C S, Iota V, Cynn H, Nicol M F, Le Bihan T
      Physical Review B68 (2003) 014107-014107
      Crystal structure of bent carbon dioxide phase IV
      Sample: P = 15 GPa, the authors do not think this is the correct structure
      _database_code_amcsd 0015235

      CELL PARAMETERS:    4.3350   4.3350   6.1020   90.000   90.000   90.000
      SPACE GROUP: P4_12_12  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    114.670
      Density (g/cm3):      2.549
      MAX. ABS. INTENSITY / VOLUME**2:      5.811497468    
      RIR:      0.742
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                29.13         17.27        3.0653    1   1   0         4
                32.69         14.23        2.7391    1   1   1         8
                36.00         22.13        2.4950    1   0   2         8
                41.67         30.65        2.1675    2   0   0         4
                41.77        100.00        2.1624    1   1   2         8
                49.32          1.25        1.8477    2   1   1         8
                49.50          1.34        1.8414    1   0   3         8
                60.40          6.93        1.5327    2   2   0         4
                60.71          4.02        1.5255    0   0   4         2
                62.48          1.09        1.4865    2   2   1         8
                76.13          3.92        1.2504    3   1   2         8
                76.34          1.46        1.2475    2   0   4         8
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.