data_[Pm4Pr2Er8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Pr  1.1300  1.8500  1.0600
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P1]
_cell_length_a [6.0949]
_cell_length_b [8.4112]
_cell_length_c [9.5512]
_cell_angle_alpha [88.1179]
_cell_angle_beta [78.1063]
_cell_angle_gamma [72.3229]
_symmetry_Int_Tables_number [1]
_chemical_formula_structural [Pm2PrEr4]
_chemical_formula_sum '[Pm4 Pr2 Er8]'
_cell_volume [456.2814]
_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  1  0.3590  0.4835  0.7006  1
  Pr  Pr1  1  0.4499  0.9539  0.2024  1
  Pm  Pm2  1  0.5707  0.6220  0.9765  1
  Pr  Pr3  1  0.7163  0.2259  0.1160  1
  Pm  Pm4  1  0.7226  0.1136  0.4729  1
  Pm  Pm5  1  0.8162  0.6966  0.6237  1
  Er  Er6  1  0.0083  0.8505  0.9202  1
  Er  Er7  1  0.0542  0.7453  0.2718  1
  Er  Er8  1  0.1247  0.4247  0.0520  1
  Er  Er9  1  0.1739  0.3357  0.4046  1
  Er  Er10  1  0.2583  0.9048  0.5658  1
  Er  Er11  1  0.4641  0.0658  0.8408  1
  Er  Er12  1  0.6102  0.5563  0.3471  1
  Er  Er13  1  0.9214  0.2713  0.7555  1
]