data_[Tm8Si2Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Si  1.9000  1.1000  0.5400
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.4829]
_cell_length_b [4.5427]
_cell_length_c [8.6205]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.0865]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tm4SiPb2]
_chemical_formula_sum '[Tm8 Si2 Pb4]'
_cell_volume [380.9792]
_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  0.0746  0.0000  0.3636  1.0
  Tm  Tm1  4  0.1667  0.5000  0.0605  1.0
  Si  Si2  2  0.0000  0.0000  0.0000  1.0
  Pb  Pb3  4  0.1539  0.5000  0.6686  1.0
]