data_[K8Rb4Hg4I16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Hg  2.0000  1.5000  1.2450
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.5665]
_cell_length_b [15.8566]
_cell_length_c [17.3744]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [K2RbHgI4]
_chemical_formula_sum '[K8 Rb4 Hg4 I16]'
_cell_volume [1533.5591]
_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  8  0.0000  0.3696  0.5511  1
  Rb  Rb1  4  0.0000  0.1393  0.7500  1
  Hg  Hg2  4  0.0000  0.1112  0.2500  1
  I  I3  8  0.0000  0.2631  0.1256  1
  I  I4  4  0.0000  0.0000  0.0000  1
  I  I5  4  0.0000  0.4438  0.7500  1
]