data_[Tl1Pb2Br1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Pb  2.3300  1.8000  1.1225
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [3.7005]
_cell_length_b [3.7005]
_cell_length_c [9.5092]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [TlPb2Br]
_chemical_formula_sum '[Tl1 Pb2 Br1]'
_cell_volume [130.2165]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5302  1
  Pb  Pb1  1  0.0000  0.0000  0.0043  1
  Pb  Pb2  1  0.5000  0.5000  0.2370  1
  Br  Br3  1  0.5000  0.5000  0.7284  1
]