data_[Er20Bi8Os4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Bi  2.0200  1.6000  1.0350
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.5164]
_cell_length_b [15.8010]
_cell_length_c [14.4129]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Er5Bi2Os]
_chemical_formula_sum '[Er20 Bi8 Os4]'
_cell_volume [1256.2943]
_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
[
  Er  Er0  8  0.0000  0.0531  0.1240  1
  Er  Er1  8  0.0000  0.2767  0.1033  1
  Er  Er2  4  0.0000  0.3015  0.7500  1
  Bi  Bi3  8  0.0000  0.1414  0.5719  1
  Os  Os4  4  0.0000  0.1734  0.2500  1
]