H2Ta2O6
      Groult D, Pannetier, Raveau B
      Journal of Solid State Chemistry 41 (1982) 277-285
      Neutron diffraction study of the defect pyrochlores TaWO5.5, HTaWO6,
      H2Ta2O6, and HTaWO6*H2 O
      _cod_database_code 1001216
      _database_code_amcsd 0013471

      CELL PARAMETERS:   10.6032  10.6032  10.6032   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1192.095
      Density (g/cm3):      5.124
      MAX. ABS. INTENSITY / VOLUME**2:      294.5266769    
      RIR:     18.715
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.47        100.00        6.1218    1   1   1         8
                27.91         46.98        3.1970    3   1   1        24
                29.18         53.50        3.0609    2   2   2         8
                33.81         17.46        2.6508    4   0   0         6
                36.95         13.70        2.4325    3   3   1        24
                44.39          7.65        2.0406    5   1   1        24
                44.39          7.15        2.0406    3   3   3         8
                48.57         21.04        1.8744    4   4   0        12
                50.95         16.63        1.7923    5   3   1        48
                56.95          6.42        1.6170    5   3   3        24
                57.67         20.14        1.5985    6   2   2        24
                60.49          5.74        1.5304    4   4   4         8
                62.56          5.67        1.4847    5   5   1        24
                62.56          4.16        1.4847    7   1   1        24
                67.90          6.62        1.3804    7   3   1        48
                67.90          2.36        1.3804    5   5   3        24
                71.13          2.74        1.3254    8   0   0         6
                73.04          1.36        1.2954    7   3   3        24
                78.05          2.86        1.2244    7   5   1        48
                78.67          6.76        1.2163    6   6   2        24
                81.13          6.12        1.1855    8   4   0        24
                82.96          1.50        1.1639    9   1   1        24
                82.96          2.67        1.1639    7   5   3        48
                87.83          2.86        1.1115    9   3   1        48
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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.