Al F4 Rb
      Bulou A, Nouet J
      Journal of Physics C: Solid State Physics 15 (1982) 183-196
      Structural phase transitions in ferroelastic Rb al F4: I. DSC, x-ray
      powder diffraction investigations and neutron powder profile refinement
      of the structures
      _cod_database_code 1000454
      _database_code_amcsd 0013169

      CELL PARAMETERS:    5.1375   5.1375   6.2912   90.000   90.000   90.000
      SPACE GROUP: P4/mbm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    166.049
      Density (g/cm3):      3.768
      MAX. ABS. INTENSITY / VOLUME**2:      62.67239651    
      RIR:      5.415
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.08          4.50        6.2912    0   0   1         2
                24.50          1.59        3.6328    1   1   0         4
                28.37         76.69        3.1459    1   1   1         8
                28.37         23.31        3.1456    0   0   2         2
                34.93         25.97        2.5687    2   0   0         4
                37.83         31.03        2.3782    2   0   1         8
                37.83         28.16        2.3780    1   1   2         8
                45.59          3.02        1.9896    2   0   2         8
                50.23         19.92        1.8164    2   2   0         4
                50.23         20.36        1.8162    1   1   3         8
                52.43          1.01        1.7451    2   2   1         8
                56.66          4.02        1.6245    2   0   3         8
                58.69         17.21        1.5730    3   1   1        16
                58.69          8.55        1.5730    2   2   2         8
                58.70          5.35        1.5728    0   0   4         2
                64.56          6.84        1.4435    3   1   2        16
                70.16          4.34        1.3413    2   0   4         8
                73.77          4.36        1.2844    4   0   0         4
                73.78         10.79        1.2843    3   1   3        16
                80.83          2.26        1.1891    3   3   1         8
                80.83          2.61        1.1891    4   0   2         8
                80.84          6.08        1.1890    2   2   4         8
                80.84          1.83        1.1889    1   1   5         8
                84.30          3.04        1.1488    4   2   0         8
                86.03          2.31        1.1301    4   2   1        16
                86.03          1.52        1.1301    3   3   2         8
                86.04          2.00        1.1300    2   0   5         8
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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.