data_[K2Na2Hg4Sb2]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [4.8835]
_cell_length_b [5.1266]
_cell_length_c [13.0559]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [KNaHg2Sb]
_chemical_formula_sum '[K2 Na2 Hg4 Sb2]'
_cell_volume [326.8632]
_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  0.5647  1.0
  Na  Na1  2  0.0000  0.5000  0.2983  1.0
  Hg  Hg2  2  0.0000  0.0000  0.9479  1.0
  Hg  Hg3  2  0.0000  0.5000  0.8065  1.0
  Sb  Sb4  2  0.0000  0.0000  0.1705  1.0
]