PrH2
      Wyckoff R W G
      Crystal Structures 1 (1963) 239-444
      Second edition. Interscience Publishers, New York, New York
      Fluorite structure
      _database_code_amcsd 0011708

      CELL PARAMETERS:    5.5170   5.5170   5.5170   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    167.923
      Density (g/cm3):      5.653
      MAX. ABS. INTENSITY / VOLUME**2:      336.3944686    
      RIR:     19.378
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.01        100.00        3.1852    1   1   1         8
                32.46         47.79        2.7585    2   0   0         6
                46.56         33.97        1.9506    2   2   0        12
                55.22         36.52        1.6634    3   1   1        24
                57.90         10.03        1.5926    2   2   2         8
                67.97          4.38        1.3793    4   0   0         6
                75.05         12.08        1.2657    3   3   1        24
                77.35         10.72        1.2336    4   2   0        24
                86.40          7.76        1.1262    4   2   2        24
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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.