data_[Yb4Cu2Ir2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Yb  1.1000  1.7500  1.0840
  Cu  1.9000  1.3500  0.8200
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.2180]
_cell_length_b [3.9911]
_cell_length_c [10.2127]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Yb2CuIr]
_chemical_formula_sum '[Yb4 Cu2 Ir2]'
_cell_volume [171.9249]
_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
[
  Yb  Yb0  2  0.0000  0.0000  0.1404  1.0
  Yb  Yb1  2  0.5000  0.0000  0.8597  1.0
  Cu  Cu2  2  0.5000  0.0000  0.5652  1.0
  Ir  Ir3  2  0.0000  0.0000  0.4347  1.0
]