data_[U1Si2Ir2Os1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  U  1.3800  1.7500  0.9913
  Si  1.9000  1.1000  0.5400
  Ir  2.2000  1.3500  0.7650
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [4.5120]
_cell_length_b [4.5120]
_cell_length_c [5.3604]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [USi2Ir2Os]
_chemical_formula_sum '[U1 Si2 Ir2 Os1]'
_cell_volume [109.1258]
_cell_formula_units_Z [1]
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
[
  U  U0  1  0.0000  0.0000  0.5000  1
  Si  Si1  2  0.0000  0.5000  0.0000  1
  Ir  Ir2  2  0.5000  0.5000  0.2579  1
  Os  Os3  1  0.0000  0.0000  0.0000  1
]