data_[Tl4Sn4F2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Sn  1.9600  1.4500  0.8300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [6.7722]
_cell_length_b [6.7722]
_cell_length_c [5.9053]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Tl2Sn2F]
_chemical_formula_sum '[Tl4 Sn4 F2]'
_cell_volume [270.8341]
_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
[
  Tl  Tl0  4  0.1648  0.3352  0.0000  1
  Sn  Sn1  4  0.2219  0.7219  0.5000  1
  F  F2  2  0.0000  0.0000  0.0000  1
]