FeF2
      Wyckoff R W G
      Crystal Structures 1 (1963) 239-444
      Second edition. Interscience Publishers, New York, New York
      Rutile structure
      _database_code_amcsd 0011753

      CELL PARAMETERS:    4.6966   4.6966   3.3091   90.000   90.000   90.000
      SPACE GROUP: P4_2/mnm  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     72.992
      Density (g/cm3):      4.269
      MAX. ABS. INTENSITY / VOLUME**2:      53.80284746    
      RIR:      4.104
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                26.85        100.00        3.3210    1   1   0         4
                33.12         61.85        2.7051    1   0   1         8
                38.33          7.12        2.3483    2   0   0         4
                38.40         22.12        2.3441    1   1   1         8
                43.07          5.59        2.1004    2   1   0         8
                51.54         64.62        1.7733    2   1   1        16
                55.33         18.24        1.6605    2   2   0         4
                55.54         11.81        1.6545    0   0   2         2
                62.54          9.05        1.4852    3   1   0         8
                62.74         13.43        1.4809    1   1   2         8
                66.02         20.95        1.4152    3   0   1         8
                69.35          1.52        1.3550    3   1   1        16
                69.50          2.66        1.3525    2   0   2         8
                72.76          1.23        1.2997    2   1   2        16
                78.99          4.73        1.2121    3   2   1        16
                82.08          3.14        1.1741    4   0   0         4
                82.26          8.26        1.1720    2   2   2         8
                88.28          3.31        1.1070    3   3   0         4
                88.46          5.84        1.1052    3   1   2        16
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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.