data_[Na4Hg5Sb2]
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 [P2/m]
_cell_length_a [8.3059]
_cell_length_b [3.3763]
_cell_length_c [10.7163]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.8492]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Na4Hg5Sb2]
_chemical_formula_sum '[Na4 Hg5 Sb2]'
_cell_volume [298.3766]
_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  0.1765  0.5000  0.8961  1.0
  Na  Na1  2  0.2838  0.5000  0.4391  1.0
  Hg  Hg2  2  0.1804  0.0000  0.1511  1.0
  Hg  Hg3  2  0.4607  0.0000  0.7016  1.0
  Hg  Hg4  1  0.5000  0.0000  0.0000  1.0
  Sb  Sb5  2  0.0682  0.0000  0.6388  1.0
]