NdH2
      Wyckoff R W G
      Crystal Structures 1 (1963) 239-444
      Second edition. Interscience Publishers, New York, New York
      Fluorite structure
      _database_code_amcsd 0011701

      CELL PARAMETERS:    5.4700   5.4700   5.4700   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    163.667
      Density (g/cm3):      5.935
      MAX. ABS. INTENSITY / VOLUME**2:      360.6210962    
      RIR:     19.786
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.26        100.00        3.1581    1   1   1         8
                32.74         47.84        2.7350    2   0   0         6
                46.98         33.83        1.9339    2   2   0        12
                55.74         36.32        1.6493    3   1   1        24
                58.45          9.98        1.5791    2   2   2         8
                68.63          4.34        1.3675    4   0   0         6
                75.81         11.98        1.2549    3   3   1        24
                78.14         10.64        1.2231    4   2   0        24
                87.33          7.71        1.1166    4   2   2        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.