data_[K4Mg4Hg4F20]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [6.7091]
_cell_length_b [10.3311]
_cell_length_c [7.6236]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.8903]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [KMgHgF5]
_chemical_formula_sum '[K4 Mg4 Hg4 F20]'
_cell_volume [512.9570]
_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  0.3229  0.7500  1.0
  Mg  Mg1  4  0.0000  0.0000  0.0000  1.0
  Hg  Hg2  4  0.0000  0.3346  0.2500  1.0
  F  F3  8  0.0914  0.1832  0.0748  1.0
  F  F4  8  0.1963  0.4490  0.4681  1.0
  F  F5  4  0.0000  0.0561  0.7500  1.0
]