data_[Tl1Ir1Se2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Ir  2.2000  1.3500  0.7650
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Pmmm]
_cell_length_a [3.1736]
_cell_length_b [4.8413]
_cell_length_c [5.1398]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [47]
_chemical_formula_structural [TlIrSe2]
_chemical_formula_sum '[Tl1 Ir1 Se2]'
_cell_volume [78.9704]
_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  0.5000  0.0000  0.5000  1
  Ir  Ir1  1  0.0000  0.5000  0.5000  1
  Se  Se2  1  0.0000  0.0000  0.0000  1
  Se  Se3  1  0.5000  0.5000  0.0000  1
]