data_[Pr2Mg4Si4Ir2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Mg  1.3100  1.5000  0.8600
  Si  1.9000  1.1000  0.5400
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.0376]
_cell_length_b [5.0376]
_cell_length_c [10.8921]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [PrMg2Si2Ir]
_chemical_formula_sum '[Pr2 Mg4 Si4 Ir2]'
_cell_volume [276.4122]
_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  0.5000  1
  Mg  Mg1  4  0.0000  0.5000  0.2500  1
  Si  Si2  4  0.0000  0.0000  0.2076  1
  Ir  Ir3  2  0.0000  0.0000  0.0000  1
]