data_[Pm4Er12Bi8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Er  1.2400  1.7500  1.0300
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.6752]
_cell_length_b [4.3412]
_cell_length_c [9.9211]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.4027]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [PmEr3Bi2]
_chemical_formula_sum '[Pm4 Er12 Bi8]'
_cell_volume [738.1702]
_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
[
  Pm  Pm0  4  0.1113  0.0000  0.1169  1
  Er  Er1  4  0.0572  0.0000  0.6704  1
  Er  Er2  4  0.1377  0.5000  0.4780  1
  Er  Er3  4  0.1885  0.5000  0.8894  1
  Bi  Bi4  4  0.0113  0.5000  0.8430  1
  Bi  Bi5  4  0.2483  0.0000  0.7105  1
]