data_[Er4Bi4Pb8O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.6708]
_cell_length_b [13.7845]
_cell_length_c [13.1080]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [ErBiPb2O5]
_chemical_formula_sum '[Er4 Bi4 Pb8 O20]'
_cell_volume [663.2643]
_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
[
  Er  Er0  4  0.0000  0.2719  0.9960  1.0
  Bi  Bi1  4  0.0000  0.4514  0.4398  1.0
  Pb  Pb2  4  0.0000  0.0717  0.6693  1.0
  Pb  Pb3  4  0.0000  0.1767  0.2667  1.0
  O  O4  4  0.0000  0.0998  0.0199  1.0
  O  O5  4  0.0000  0.2178  0.6043  1.0
  O  O6  4  0.0000  0.2828  0.3995  1.0
  O  O7  4  0.0000  0.3792  0.8615  1.0
  O  O8  4  0.0000  0.4380  0.0670  1.0
]