data_[Ce4Pm8Pr4Sb16]
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
  Pr  1.1300  1.8500  1.0600
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [9.0284]
_cell_length_b [9.0342]
_cell_length_c [12.7658]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [CePm2PrSb4]
_chemical_formula_sum '[Ce4 Pm8 Pr4 Sb16]'
_cell_volume [1041.2345]
_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  0.0000  0.5000  1
  Pm  Pm1  4  0.0000  0.0000  0.0000  1
  Pm  Pm2  4  0.2500  0.2500  0.2500  1
  Pr  Pr3  4  0.2500  0.2500  0.7500  1
  Sb  Sb4  8  0.0000  0.0026  0.2509  1
  Sb  Sb5  8  0.2495  0.2500  0.4987  1
]