data_[Sr8Cu8Bi4O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cu  1.9000  1.3500  0.8200
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [27.5393]
_cell_length_b [5.1746]
_cell_length_c [5.1283]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Sr2Cu2BiO7]
_chemical_formula_sum '[Sr8 Cu8 Bi4 O28]'
_cell_volume [730.8090]
_cell_formula_units_Z [4]
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
[
  Sr  Sr0  8  0.1412  0.5002  0.4765  1
  Cu  Cu1  8  0.0609  0.5007  0.9779  1
  Bi  Bi2  4  0.2500  0.5117  0.0009  1
  O  O3  8  0.0750  0.2490  0.7277  1
  O  O4  8  0.0756  0.7498  0.7271  1
  O  O5  8  0.1707  0.0063  0.4742  1
  O  O6  4  0.2500  0.5685  0.4285  1
]