data_[K4Mg4Hg4Cl20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Mg  1.3100  1.5000  0.8600
  Hg  2.0000  1.5000  1.2450
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [8.7124]
_cell_length_b [11.9892]
_cell_length_c [9.5119]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.4846]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [KMgHgCl5]
_chemical_formula_sum '[K4 Mg4 Hg4 Cl20]'
_cell_volume [924.5261]
_cell_formula_units_Z [4]
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  4  0.0000  0.3326  0.7500  1.0
  Mg  Mg1  4  0.0000  0.0000  0.0000  1.0
  Hg  Hg2  4  0.0000  0.3150  0.2500  1.0
  Cl  Cl3  8  0.1084  0.1962  0.0866  1.0
  Cl  Cl4  8  0.1957  0.4460  0.4464  1.0
  Cl  Cl5  4  0.0000  0.0622  0.7500  1.0
]