data_[Na3Hg4Sb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [5.0914]
_cell_length_b [6.2488]
_cell_length_c [8.6926]
_cell_angle_alpha [103.5780]
_cell_angle_beta [90.7448]
_cell_angle_gamma [113.8922]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Na3(Hg2Sb)2]
_chemical_formula_sum '[Na3 Hg4 Sb2]'
_cell_volume [243.9655]
_cell_formula_units_Z [1]
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  0.4415  0.8811  0.6650  1
  Na  Na1  1  0.0000  0.0000  0.0000  1
  Hg  Hg2  2  0.1297  0.2560  0.5796  1
  Hg  Hg3  2  0.3492  0.6923  0.9758  1
  Sb  Sb4  2  0.2473  0.5028  0.2752  1
]