data_[Yb4F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Yb  1.1000  1.7500  1.0840
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [5.8173]
_cell_length_b [3.4946]
_cell_length_c [6.8637]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [YbF2]
_chemical_formula_sum '[Yb4 F8]'
_cell_volume [139.5315]
_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
[
  Yb  Yb0  4  0.2476  0.2500  0.1139  1.0
  F  F1  4  0.0241  0.7500  0.3346  1.0
  F  F2  4  0.1427  0.7500  0.9281  1.0
]