data_[Tm8Cu2Sn4]
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/m]
_cell_length_a [16.7610]
_cell_length_b [3.5559]
_cell_length_c [6.8325]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.6791]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tm4CuSn2]
_chemical_formula_sum '[Tm8 Cu2 Sn4]'
_cell_volume [372.9384]
_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
[
  Tm  Tm0  4  0.0849  0.0000  0.4346  1
  Tm  Tm1  4  0.1150  0.5000  0.9125  1
  Cu  Cu2  2  0.0000  0.0000  0.0000  1
  Sn  Sn3  4  0.2495  0.0000  0.2989  1
]