data_[Ce4Pm8Bi8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Pm  1.1300  1.8500  1.1100
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.4043]
_cell_length_b [19.9631]
_cell_length_c [7.3620]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Ce(PmBi)2]
_chemical_formula_sum '[Ce4 Pm8 Bi8]'
_cell_volume [647.2892]
_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
[
  Ce  Ce0  4  0.0000  0.4225  0.8887  1
  Pm  Pm1  4  0.0000  0.2023  0.6585  1
  Pm  Pm2  4  0.0000  0.3980  0.4424  1
  Bi  Bi3  4  0.0000  0.0262  0.6810  1
  Bi  Bi4  4  0.0000  0.1819  0.1951  1
]