NH4AlF4
      Bulou A, Leble A, Hewat A
      Materials Research Bulletin 17 (1982) 391-397
      NH4AlF4: Determination of the Ordered and Disordered Structures by
      Neutron Powder Profile Refinement
      _cod_database_code 1000183
      _database_code_amcsd 0014296

      CELL PARAMETERS:    5.0564   5.0564  12.7113   90.000   90.000   90.000
      SPACE GROUP: P4_2/mbc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    324.992
      Density (g/cm3):      2.473
      MAX. ABS. INTENSITY / VOLUME**2:      10.74495888    
      RIR:      1.415
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.93        100.00        6.3556    0   0   2         2
                24.90         67.12        3.5754    1   1   0         4
                28.08         24.86        3.1778    0   0   4         2
                28.65         48.52        3.1162    1   1   2         8
                35.51         27.57        2.5282    2   0   0         4
                37.88         13.58        2.3752    1   1   4         8
                38.32         12.71        2.3492    2   0   2         8
                40.52         12.78        2.2263    2   1   1        16
                42.68         17.34        2.1186    0   0   6         2
                45.47          8.26        1.9950    2   1   3        16
                45.87          6.42        1.9785    2   0   4         8
                50.04         23.55        1.8226    1   1   6         8
                51.09         34.95        1.7877    2   2   0         4
                53.23          8.02        1.7209    2   2   2         8
                54.29          4.07        1.6896    2   1   5        16
                57.65         16.75        1.5990    3   1   0         8
                58.05         10.91        1.5889    0   0   8         2
                59.31          4.08        1.5581    2   2   4         8
                59.62         13.84        1.5507    3   1   2        16
                64.14          5.24        1.4520    1   1   8         8
                65.98          1.72        1.4159    2   1   7        16
                68.70          7.97        1.3663    2   2   6         8
                69.93          3.21        1.3453    2   0   8         8
                74.32         15.09        1.2763    3   1   6        16
                75.16          6.32        1.2641    4   0   0         4
                76.90          1.00        1.2398    4   0   2         8
                78.33          2.27        1.2207    4   1   1        16
                80.95         10.04        1.1876    2   2   8         8
                81.75          1.91        1.1780    4   1   3        16
                85.98          4.18        1.1306    4   2   0         8
                86.31          5.20        1.1271    3   1   8        16
                88.52          1.41        1.1046    4   1   5        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.