F2 H Na
      Andersen C, Hassel O
      Zeitschrift fur Physikalische Chemie (Leipzig) 123 (1926) 151-159
      Die Struktur des kristallisierten Natriumhydrofluorids und die Gestalt
      des Ions H F2^-^
      _cod_database_code 1010284
      _database_code_amcsd 0017210

      CELL PARAMETERS:    5.0500   5.0500   5.0500   40.030   40.030   40.030
      SPACE GROUP: R-3       
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     48.008
      Density (g/cm3):      2.144
      MAX. ABS. INTENSITY / VOLUME**2:      12.37215614    
      RIR:      1.879
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.13         56.04        4.6389    1   1   1         2
                30.54          8.86        2.9268    1   0   0         6
                32.56        100.00        2.7500    1   1   0         6
                38.83          1.66        2.3194    2   2   2         2
                44.44         71.89        2.0384    2   2   1         6
                52.98         41.52        1.7284    0  -1   1         6
                56.85          6.27        1.6197    2   0   1         6
                56.85          6.27        1.6197    2   1   0         6
                63.58          8.31        1.4634    2   0   0         6
                87.30          2.19        1.1169    2  -1   1         6
                87.30          2.19        1.1169    1  -1   2         6
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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.