data_[Tm8Cu8Sn4]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.1452]
_cell_length_b [5.5049]
_cell_length_c [7.8344]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.5151]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Tm2Cu2Sn]
_chemical_formula_sum '[Tm8 Cu8 Sn4]'
_cell_volume [425.4262]
_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  8  0.1485  0.3554  0.1488  1.0
  Cu  Cu1  8  0.1450  0.1433  0.4983  1.0
  Sn  Sn2  4  0.0000  0.1599  0.7500  1.0
]