data_[Na2Tl4Hg2Sb4]
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
  Hg  2.0000  1.5000  1.2450
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.9504]
_cell_length_b [9.3747]
_cell_length_c [7.8493]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [NaTl2HgSb2]
_chemical_formula_sum '[Na2 Tl4 Hg2 Sb4]'
_cell_volume [364.2759]
_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
[
  Na  Na0  2  0.0000  0.4544  0.9965  1.0
  Tl  Tl1  2  0.0000  0.1654  0.3472  1.0
  Tl  Tl2  2  0.5000  0.0824  0.0209  1.0
  Hg  Hg3  2  0.5000  0.3343  0.6552  1.0
  Sb  Sb4  2  0.0000  0.1703  0.7517  1.0
  Sb  Sb5  2  0.5000  0.3647  0.2740  1.0
]