data_[Na4Tl20In8Hg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
  In  1.7800  1.5500  0.9400
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.4470]
_cell_length_b [19.8069]
_cell_length_c [15.3049]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [NaTl5In2Hg]
_chemical_formula_sum '[Na4 Tl20 In8 Hg4]'
_cell_volume [1044.9290]
_cell_formula_units_Z [4]
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
[
  Na  Na0  4  0.0000  0.3806  0.3990  1
  Tl  Tl1  4  0.0000  0.0308  0.0488  1
  Tl  Tl2  4  0.0000  0.2190  0.3568  1
  Tl  Tl3  4  0.0000  0.3710  0.0176  1
  Tl  Tl4  4  0.0000  0.3723  0.6989  1
  Tl  Tl5  4  0.0000  0.4484  0.2113  1
  In  In6  4  0.0000  0.0424  0.3581  1
  In  In7  4  0.0000  0.1989  0.6964  1
  Hg  Hg8  4  0.0000  0.2078  0.0373  1
]