data_[Pm2Zn8Ir4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Zn  1.6500  1.3500  0.8800
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [P4_2/mnm]
_cell_length_a [7.7093]
_cell_length_b [7.7093]
_cell_length_c [4.1054]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [136]
_chemical_formula_structural [Pm(Zn2Ir)2]
_chemical_formula_sum '[Pm2 Zn8 Ir4]'
_cell_volume [243.9925]
_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  2  0.0000  0.0000  0.5000  1
  Zn  Zn1  8  0.0918  0.3465  0.0000  1
  Ir  Ir2  4  0.2142  0.7858  0.0000  1
]