data_[K2Rb2Hg4]
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
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [6.9492]
_cell_length_b [7.0894]
_cell_length_c [7.3273]
_cell_angle_alpha [106.2554]
_cell_angle_beta [102.8860]
_cell_angle_gamma [92.7392]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [KRbHg2]
_chemical_formula_sum '[K2 Rb2 Hg4]'
_cell_volume [335.4762]
_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  0.2421  0.6544  0.4595  1
  Rb  Rb1  2  0.3245  0.2020  0.8559  1
  Hg  Hg2  2  0.1187  0.7087  0.9466  1
  Hg  Hg3  2  0.2001  0.1020  0.2954  1
]