BeF2
      Ghalsasi P, Ghalsasi P S
      Inorganic Chemistry 50 (2010) 86-89
      Single crystal X-ray structure of BeF2: alpha-quartz
      Locality: synthetic
      _database_code_amcsd 0018307

      CELL PARAMETERS:    4.7390   4.7390   5.1875   90.000   90.000  120.000
      SPACE GROUP: P3_121    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    100.893
      Density (g/cm3):      2.321
      MAX. ABS. INTENSITY / VOLUME**2:      11.90151026    
      RIR:      1.670
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                21.65         19.45        4.1041    1   0   0         6
                27.72         73.38        3.2186    1   0   1         6
                27.72         26.62        3.2186    0   1   1         6
                37.97         19.33        2.3695    1   1   0         3
                41.17         30.32        2.1926    1   0   2         6
                41.92         30.08        2.1553    1   1   1         6
                47.66         17.92        1.9082    0   2   1         6
                47.66          1.28        1.9082    2   0   1         6
                52.29         10.38        1.7494    1   1   2         6
                52.95          1.91        1.7292    0   0   3         2
                57.25          7.18        1.6093    2   0   2         6
                57.87          2.21        1.5935    0   1   3         6
                57.87          1.69        1.5935    1   0   3         6
                59.60          5.35        1.5512    2   1   0         6
                62.49          5.92        1.4862    2   1   1         6
                67.00          1.65        1.3968    1   1   3         6
                70.77          2.16        1.3313    1   2   2         6
                71.29          2.43        1.3228    3   0   1         6
                71.33          3.90        1.3223    0   2   3         6
                77.13          1.44        1.2366    0   1   4         6
                79.15          1.12        1.2100    3   0   2         6
                83.77          3.17        1.1547    1   2   3         6
                85.32          2.06        1.1376    1   1   4         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.