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 1008388
      _database_code_amcsd 0016297

      CELL PARAMETERS:    3.8109   3.8793  11.6477   90.000   90.000   90.000
      SPACE GROUP: Pmmm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    172.195
      Density (g/cm3):      6.410
      MAX. ABS. INTENSITY / VOLUME**2:      2.039891664    
      RIR:      0.104
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.59        100.00       11.6477    0   0   1         2
                15.21         14.06        5.8239    0   0   2         2
                22.91          9.22        3.8826    0   0   3         2
                22.92         18.05        3.8793    0   1   0         2
                23.34          6.88        3.8109    1   0   0         2
                27.63          1.53        3.2286    0   1   2         4
                27.98          3.24        3.1889    1   0   2         4
                32.63         42.96        2.7442    0   1   3         4
                32.93         42.25        2.7197    1   0   3         4
                32.95         39.32        2.7186    1   1   0         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.