data_[Pm8Sn4Ir8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sn  1.9600  1.4500  0.8300
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.1889]
_cell_length_b [5.6802]
_cell_length_c [8.1546]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.1285]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Pm2SnIr2]
_chemical_formula_sum '[Pm8 Sn4 Ir8]'
_cell_volume [457.6698]
_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
[
  Pm  Pm0  8  0.1467  0.3443  0.6486  1
  Sn  Sn1  4  0.0000  0.1559  0.2500  1
  Ir  Ir2  8  0.1405  0.1388  0.9982  1
]