data_[Rb2Tl2Hg2F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  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 [5.4682]
_cell_length_b [6.6803]
_cell_length_c [8.4052]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.9743]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbTlHgF4]
_chemical_formula_sum '[Rb2 Tl2 Hg2 F8]'
_cell_volume [292.0474]
_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
[
  Rb  Rb0  2  0.2131  0.2500  0.9630  1.0
  Tl  Tl1  2  0.3845  0.7500  0.4726  1.0
  Hg  Hg2  2  0.0823  0.7500  0.6674  1.0
  F  F3  4  0.2304  0.0257  0.2927  1.0
  F  F4  2  0.2465  0.7500  0.9444  1.0
  F  F5  2  0.2902  0.2500  0.6234  1.0
]