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 1008392
      _database_code_amcsd 0016301

      CELL PARAMETERS:    3.8136   3.8806  11.6620   90.000   90.000   90.000
      SPACE GROUP: Pmmm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    172.587
      Density (g/cm3):      6.395
      MAX. ABS. INTENSITY / VOLUME**2:      1.962829965    
      RIR:      0.100
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.58        100.00       11.6620    0   0   1         2
                15.19         11.15        5.8310    0   0   2         2
                22.92          5.21        3.8806    0   1   0         2
                24.17          1.49        3.6821    0   1   1         4
                27.96          1.56        3.1916    1   0   2         4
                32.60          9.27        2.7464    0   1   3         4
                32.90          9.64        2.7223    1   0   3         4
                32.93          8.04        2.7200    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.