data_[Tl2Hg2F4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Hg  2.0000  1.5000  1.2450
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.6488]
_cell_length_b [3.6937]
_cell_length_c [8.0732]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.7243]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [TlHgF2]
_chemical_formula_sum '[Tl2 Hg2 F4]'
_cell_volume [164.9349]
_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  2  0.2294  0.2500  0.3831  1.0
  Hg  Hg1  2  0.3109  0.7500  0.9388  1.0
  F  F2  2  0.0235  0.2500  0.8649  1.0
  F  F3  2  0.2214  0.7500  0.6200  1.0
]