data_[Pm2Pr2Zn8]
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
  Zn  1.6500  1.3500  0.8800
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [4.5843]
_cell_length_b [7.2232]
_cell_length_c [7.9404]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [PmPrZn4]
_chemical_formula_sum '[Pm2 Pr2 Zn8]'
_cell_volume [262.9344]
_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
[
  Pr  Pr0  2  0.0000  0.0000  0.0000  1
  Pm  Pm1  2  0.0000  0.5000  0.0000  1
  Zn  Zn2  8  0.0000  0.2474  0.3333  1
]