data_[Pm8Bi4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.6039]
_cell_length_b [6.8144]
_cell_length_c [9.5000]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.6602]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Pm4Bi2O]
_chemical_formula_sum '[Pm8 Bi4 O2]'
_cell_volume [405.0402]
_cell_formula_units_Z [2]
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
[
  Pm  Pm0  4  0.4576  0.5018  0.6971  1
  Pm  Pm1  2  0.0710  0.7500  0.3370  1
  Pm  Pm2  2  0.1671  0.7500  0.9586  1
  Bi  Bi3  2  0.1444  0.2500  0.3941  1
  Bi  Bi4  2  0.3003  0.2500  0.9775  1
  O  O5  2  0.3086  0.7500  0.2116  1
]