data_[Ba8Tm4Tl4Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Tm  1.2500  1.7500  1.0950
  Tl  1.6200  1.9000  1.3325
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.3131]
_cell_length_b [19.1350]
_cell_length_c [13.5096]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Ba2TmTlSe5]
_chemical_formula_sum '[Ba8 Tm4 Tl4 Se20]'
_cell_volume [1114.9499]
_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
[
  Ba  Ba0  4  0.0000  0.1201  0.6854  1.0
  Ba  Ba1  4  0.0000  0.1365  0.3157  1.0
  Tm  Tm2  4  0.0000  0.2107  0.0182  1.0
  Tl  Tl3  4  0.0000  0.4537  0.4432  1.0
  Se  Se4  4  0.0000  0.0544  0.0633  1.0
  Se  Se5  4  0.0000  0.2915  0.6556  1.0
  Se  Se6  4  0.0000  0.3114  0.3738  1.0
  Se  Se7  4  0.0000  0.3538  0.0037  1.0
  Se  Se8  4  0.0000  0.4933  0.7651  1.0
]