data_[K2Na2Hg2Bi4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [4.6001]
_cell_length_b [5.2961]
_cell_length_c [14.5479]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [KNaHgBi2]
_chemical_formula_sum '[K2 Na2 Hg2 Bi4]'
_cell_volume [354.4279]
_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
[
  K  K0  2  0.0000  0.0000  0.4440  1
  Na  Na1  2  0.0000  0.5000  0.1800  1
  Hg  Hg2  2  0.0000  0.0000  0.8359  1
  Bi  Bi3  2  0.0000  0.0000  0.0511  1
  Bi  Bi4  2  0.0000  0.5000  0.7011  1
]