data_[Rb4Na4Tl10Hg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [5.7380]
_cell_length_b [5.7380]
_cell_length_c [32.8100]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Rb2Na2Tl5Hg2]
_chemical_formula_sum '[Rb4 Na4 Tl10 Hg4]'
_cell_volume [1080.2737]
_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  4  0.0000  0.0000  0.2031  1
  Na  Na1  4  0.0000  0.0000  0.3334  1
  Tl  Tl2  8  0.0000  0.5000  0.1197  1
  Tl  Tl3  2  0.0000  0.0000  0.0000  1
  Hg  Hg4  4  0.0000  0.0000  0.0896  1
]