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 1008383
      _database_code_amcsd 0016292

      CELL PARAMETERS:    3.8093   3.8787  11.6376   90.000   90.000   90.000
      SPACE GROUP: Pmmm      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    171.947
      Density (g/cm3):      6.419
      MAX. ABS. INTENSITY / VOLUME**2:      5.521053705    
      RIR:      0.280
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.60         30.79       11.6376    0   0   1         2
                15.23         18.27        5.8188    0   0   2         2
                22.93         17.86        3.8792    0   0   3         2
                22.93         29.78        3.8787    0   1   0         2
                23.35         16.10        3.8093    1   0   0         2
                24.19          3.43        3.6797    0   1   1         4
                27.64          3.64        3.2274    0   1   2         4
                28.00          7.08        3.1871    1   0   2         4
                32.65         50.37        2.7428    0   1   3         4
                32.96         51.96        2.7180    1   0   3         4
                32.96         48.04        2.7178    1   1   0         4
                38.69          1.23        2.3274    0   1   4         4
                40.53          1.15        2.2259    1   1   3         8
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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.