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 1008405
      _database_code_amcsd 0016314

      CELL PARAMETERS:    3.8115   3.8795  11.6512   90.000   90.000   90.000
      SPACE GROUP: Pmmm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    172.283
      Density (g/cm3):      6.406
      MAX. ABS. INTENSITY / VOLUME**2:      2.104534109    
      RIR:      0.107
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.59        100.00       11.6512    0   0   1         2
                15.21         25.19        5.8256    0   0   2         2
                22.90          5.57        3.8837    0   0   3         2
                22.92          8.89        3.8795    0   1   0         2
                23.34          4.34        3.8115    1   0   0         2
                24.18          2.13        3.6808    0   1   1         4
                27.63          2.52        3.2290    0   1   2         4
                27.97          3.24        3.1895    1   0   2         4
                32.62         28.51        2.7447    0   1   3         4
                32.93         26.28        2.7203    1   0   3         4
                32.94         25.81        2.7189    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.