data_[Rb4Na2Tl10Hg4]
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 [P4/mbm]
_cell_length_a [12.1050]
_cell_length_b [12.1050]
_cell_length_c [4.6428]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Rb2NaTl5Hg2]
_chemical_formula_sum '[Rb4 Na2 Tl10 Hg4]'
_cell_volume [680.3069]
_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  0.1738  0.3262  0.0000  1
  Na  Na1  2  0.0000  0.0000  0.0000  1
  Tl  Tl2  8  0.0594  0.8059  0.5000  1
  Tl  Tl3  2  0.0000  0.5000  0.5000  1
  Hg  Hg4  4  0.1272  0.6272  0.0000  1
]