data_[Pm4Er4Bi4P2]
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
  P  2.1900  1.0000  0.5500
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.1077]
_cell_length_b [5.1077]
_cell_length_c [16.5548]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Pm2Er2Bi2P]
_chemical_formula_sum '[Pm4 Er4 Bi4 P2]'
_cell_volume [431.8902]
_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  0.0000  0.0000  0.1675  1
  Er  Er1  4  0.0000  0.5000  0.0000  1
  Bi  Bi2  4  0.0000  0.0000  0.3650  1
  P  P3  2  0.0000  0.0000  0.0000  1
]