data_[K2Rb1Hg1F8]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [4.7413]
_cell_length_b [8.7146]
_cell_length_c [5.8645]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.9044]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [K2RbHgF8]
_chemical_formula_sum '[K2 Rb1 Hg1 F8]'
_cell_volume [240.5591]
_cell_formula_units_Z [1]
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  0.5000  0.2192  0.5000  1
  Rb  Rb1  1  0.0000  0.5000  0.0000  1
  Hg  Hg2  1  0.0000  0.0000  0.0000  1
  F  F3  4  0.0737  0.1904  0.7784  1
  F  F4  2  0.3958  0.0000  0.2044  1
  F  F5  2  0.4876  0.5000  0.6713  1
]