data_[Pm16Sn4Ir8]
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 [I4_1/amd]
_cell_length_a [9.4475]
_cell_length_b [9.4475]
_cell_length_c [9.4514]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [141]
_chemical_formula_structural [Pm4SnIr2]
_chemical_formula_sum '[Pm16 Sn4 Ir8]'
_cell_volume [843.5949]
_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  16  0.0000  0.1819  0.3372  1
  Sn  Sn1  4  0.0000  0.0000  0.0000  1
  Ir  Ir2  8  0.0000  0.2500  0.6250  1
]