Ba2 Cu3 O6.91 Y
      Francois M, Junod A, Yvon K, Hewat A, Capponi J, Strobel P, Marezio M, Fischer P
      Solid State Communications 66 (1988) 1117-1125
      A study of the Cu-O chains in the high Tc superconductor Y Ba2 Cu3 O7
      by high resolution neutron powder diffraction
      _cod_database_code 1008386
      _database_code_amcsd 0016295

      CELL PARAMETERS:    3.8099   3.8789  11.6425   90.000   90.000   90.000
      SPACE GROUP: Pmmm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    172.055
      Density (g/cm3):      6.415
      MAX. ABS. INTENSITY / VOLUME**2:      1.893359605    
      RIR:      0.096
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.59        100.00       11.6425    0   0   1         2
                15.22         67.55        5.8212    0   0   2         2
                22.92         19.40        3.8808    0   0   3         2
                22.93         34.11        3.8789    0   1   0         2
                23.35         17.80        3.8099    1   0   0         2
                24.18         13.53        3.6800    0   1   1         4
                24.59          5.42        3.6210    1   0   1         4
                27.63         11.69        3.2279    0   1   2         4
                27.99         15.01        3.1878    1   0   2         4
                30.72          1.57        2.9106    0   0   4         2
                32.64         75.63        2.7435    0   1   3         4
                32.95         72.90        2.7187    1   0   3         4
                32.95         70.48        2.7181    1   1   0         4
                36.48          1.31        2.4628    1   1   2         8
                38.67          1.05        2.3285    0   0   5         2
                38.68          1.28        2.3281    0   1   4         4
                38.94          1.08        2.3129    1   0   4         4
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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.