data_[Pm4Mg2Pb10]
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
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Pbam]
_cell_length_a [6.7930]
_cell_length_b [13.5729]
_cell_length_c [4.9732]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [55]
_chemical_formula_structural [Pm2MgPb5]
_chemical_formula_sum '[Pm4 Mg2 Pb10]'
_cell_volume [458.5304]
_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  0.2182  0.8659  0.5000  1
  Mg  Mg1  2  0.0000  0.5000  0.0000  1
  Pb  Pb2  4  0.0243  0.2572  0.0000  1
  Pb  Pb3  4  0.2200  0.6147  0.5000  1
  Pb  Pb4  2  0.0000  0.0000  0.0000  1
]