data_[Pm4Cu2Pb2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Cu  1.9000  1.3500  0.8200
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.5733]
_cell_length_b [5.5561]
_cell_length_c [5.5313]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.4271]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm2CuPbO6]
_chemical_formula_sum '[Pm4 Cu2 Pb2 O12]'
_cell_volume [285.7651]
_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  0.2443  0.5000  0.7053  1
  Cu  Cu1  2  0.0000  0.0000  0.5000  1
  Pb  Pb2  2  0.0000  0.5000  0.0000  1
  O  O3  8  0.0835  0.2391  0.3520  1
  O  O4  4  0.2218  0.5000  0.0955  1
]