H Na Se
      Teichert W, Klemm W
      Zeitschrift fur Anorganische und Allgemeine Chemie 243 (1939) 86-98
      Zur Kenntnis der Hydrosulfide und Hydroselenide der Alkalimetalle
      _cod_database_code 1010907
      _database_code_amcsd 0017635

      CELL PARAMETERS:    6.2600   6.2600   6.2600   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    245.314
      Density (g/cm3):      2.760
      MAX. ABS. INTENSITY / VOLUME**2:      65.25244843    
      RIR:      7.698
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                24.63         56.03        3.6142    1   1   1         8
                28.52        100.00        3.1300    2   0   0         6
                40.77         71.49        2.2132    2   2   0        12
                48.21         26.16        1.8875    3   1   1        24
                50.50         24.09        1.8071    2   2   2         8
                59.02         10.67        1.5650    4   0   0         6
                64.93         10.86        1.4361    3   3   1        24
                66.84         27.78        1.3998    4   2   0        24
                74.21         19.48        1.2778    4   2   2        24
                79.57          6.18        1.2047    5   1   1        24
                79.57          2.06        1.2047    3   3   3         8
                88.32          5.78        1.1066    4   4   0        12
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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.