data_[Yb4Cu2I4O4]
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
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [3.9055]
_cell_length_b [3.9055]
_cell_length_c [20.2579]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Yb2Cu(IO)2]
_chemical_formula_sum '[Yb4 Cu2 I4 O4]'
_cell_volume [308.9849]
_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  4  0.0000  0.0000  0.4268  1
  Cu  Cu1  2  0.0000  0.0000  0.0000  1
  I  I2  4  0.0000  0.0000  0.1570  1
  O  O3  4  0.0000  0.5000  0.0000  1
]