data_[Pm4Mg2Bi2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Mg  1.3100  1.5000  0.8600
  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 [5.6458]
_cell_length_b [5.9156]
_cell_length_c [9.9920]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.7720]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Pm2MgBiO6]
_chemical_formula_sum '[Pm4 Mg2 Bi2 O12]'
_cell_volume [280.5991]
_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  0.2804  0.0605  0.2529  1
  Mg  Mg1  2  0.5000  0.0000  0.0000  1
  Bi  Bi2  2  0.0000  0.0000  0.5000  1
  O  O3  4  0.1196  0.0608  0.7555  1
  O  O4  4  0.2829  0.6935  0.5745  1
  O  O5  4  0.3828  0.2089  0.5715  1
]