data_[Tm20Cu8Sb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Cu  1.9000  1.3500  0.8200
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [I4/mcm]
_cell_length_a [7.8047]
_cell_length_b [7.8047]
_cell_length_c [12.7791]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [140]
_chemical_formula_structural [Tm5Cu2Sb]
_chemical_formula_sum '[Tm20 Cu8 Sb4]'
_cell_volume [778.4155]
_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
[
  Tm  Tm0  16  0.1547  0.3453  0.3585  1.0
  Tm  Tm1  4  0.0000  0.0000  0.0000  1.0
  Cu  Cu2  8  0.1313  0.3687  0.0000  1.0
  Sb  Sb3  4  0.0000  0.0000  0.2500  1.0
]