data_[Tl4F4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [3.5745]
_cell_length_b [8.1555]
_cell_length_c [19.5431]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [TlF]
_chemical_formula_sum '[Tl4 F4]'
_cell_volume [569.7088]
_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
[
  Tl  Tl0  2  0.0000  0.2336  0.3982  1
  Tl  Tl1  2  0.5000  0.2320  0.6117  1
  F  F2  2  0.5000  0.2563  0.4942  1
  F  F3  1  0.0000  0.0000  0.6122  1
  F  F4  1  0.5000  0.0000  0.3797  1
]