data_[Na5Hg4Sb1]
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 [P4/mmm]
_cell_length_a [3.6777]
_cell_length_b [3.6777]
_cell_length_c [19.7216]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [Na5Hg4Sb]
_chemical_formula_sum '[Na5 Hg4 Sb1]'
_cell_volume [266.7385]
_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  0.5000  0.5000  0.1010  1.0
  Na  Na1  2  0.5000  0.5000  0.3054  1.0
  Na  Na2  1  0.5000  0.5000  0.5000  1.0
  Hg  Hg3  2  0.0000  0.0000  0.2075  1.0
  Hg  Hg4  2  0.0000  0.0000  0.4029  1.0
  Sb  Sb5  1  0.0000  0.0000  0.0000  1.0
]