Nb2 O6 U0.5
      Labeau M, Grey I, Coubert J, Chenevas J, Collomb A, Guitel J
      Acta Crystallographica B41 (1985) 33-41
      The structure of the a-cation deficient Perovskite U Nb4 O12
      _cod_database_code 1008281
      _database_code_amcsd 0016203

      CELL PARAMETERS:    3.8560   3.8560   7.7960   90.000   90.000   90.000
      SPACE GROUP: P4/mmm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    115.917
      Density (g/cm3):      5.741
      MAX. ABS. INTENSITY / VOLUME**2:      107.3794669    
      RIR:      6.090
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                11.35         51.58        7.7960    0   0   1         2
                22.81         11.79        3.8980    0   0   2         2
                23.07         24.75        3.8560    1   0   0         4
                25.78         41.10        3.4563    1   0   1         8
                32.67        100.00        2.7413    1   0   2         8
                32.85         49.93        2.7266    1   1   0         4
                34.51          4.68        2.5987    0   0   3         2
                34.86          9.32        2.5737    1   1   1         8
                41.92          3.54        2.1550    1   0   3         8
                46.60         17.16        1.9490    0   0   4         2
                47.14         35.85        1.9280    2   0   0         4
                48.39         13.11        1.8811    1   1   3         8
                48.65          4.80        1.8716    2   0   1         8
                52.62          3.17        1.7394    1   0   4         8
                52.99          3.30        1.7282    2   0   2         8
                53.11          3.53        1.7245    2   1   0         8
                54.50          9.05        1.6838    2   1   1        16
                58.18         17.37        1.5856    1   1   4         8
                58.53         33.50        1.5770    2   1   2        16
                59.72          3.57        1.5484    2   0   3         8
                64.46          5.04        1.4455    1   0   5         8
                64.90          1.66        1.4369    2   1   3        16
                68.45         17.16        1.3707    2   0   4         8
                68.87          9.07        1.3633    2   2   0         4
                70.07          1.34        1.3429    2   2   1         8
                73.30          1.86        1.2915    2   1   4        16
                74.87          1.51        1.2682    3   0   1         8
                77.53          5.91        1.2313    1   0   6         8
                78.33          6.38        1.2207    3   0   2         8
                78.43          6.44        1.2194    3   1   0         8
                79.37          1.41        1.2073    2   2   3         8
                79.57          1.35        1.2047    3   1   1        16
                83.61          4.27        1.1565    2   1   5        16
                87.27          7.68        1.1171    2   2   4         8
                88.59          3.32        1.1039    3   1   3        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.