data_[Rb4Hg2Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Hg  2.0000  1.5000  1.2450
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.7240]
_cell_length_b [7.4787]
_cell_length_c [9.2539]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.2460]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Rb2HgCl4]
_chemical_formula_sum '[Rb4 Hg2 Cl8]'
_cell_volume [507.6804]
_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
[
  Rb  Rb0  2  0.2415  0.7500  0.4378  1.0
  Rb  Rb1  2  0.2879  0.7500  0.9446  1.0
  Hg  Hg2  2  0.2554  0.2500  0.1948  1.0
  Cl  Cl3  4  0.4909  0.5037  0.2568  1.0
  Cl  Cl4  2  0.0665  0.2500  0.3727  1.0
  Cl  Cl5  2  0.0698  0.2500  0.9172  1.0
]