data_[Sm8Bi4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [9.6134]
_cell_length_b [7.5244]
_cell_length_c [6.8963]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.8460]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Sm2BiO5]
_chemical_formula_sum '[Sm8 Bi4 O20]'
_cell_volume [477.4324]
_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
[
  Sm  Sm0  4  0.0073  0.1260  0.7401  1
  Sm  Sm1  4  0.3443  0.1294  0.5447  1
  Bi  Bi2  4  0.3295  0.6171  0.5591  1
  O  O3  4  0.0990  0.6195  0.4740  1
  O  O4  4  0.1007  0.1254  0.4473  1
  O  O5  4  0.2832  0.1082  0.8494  1
  O  O6  4  0.2854  0.6461  0.8607  1
  O  O7  4  0.4743  0.1162  0.2667  1
]