data_[Ba2Si2Ir4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Si  1.9000  1.1000  0.5400
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.9610]
_cell_length_b [8.1719]
_cell_length_c [5.3722]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [BaSiIr2]
_chemical_formula_sum '[Ba2 Si2 Ir4]'
_cell_volume [173.8935]
_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
[
  Ba  Ba0  2  0.0000  0.1553  0.0745  1
  Si  Si1  2  0.5000  0.4665  0.8063  1
  Ir  Ir2  2  0.0000  0.4421  0.5278  1
  Ir  Ir3  2  0.5000  0.2120  0.5915  1
]