data_[Rb8Hg20Sb12]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [11.8943]
_cell_length_b [14.7474]
_cell_length_c [7.3772]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Rb2Hg5Sb3]
_chemical_formula_sum '[Rb8 Hg20 Sb12]'
_cell_volume [1294.0377]
_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
[
  Rb  Rb0  8  0.2434  0.3735  0.0000  1
  Hg  Hg1  8  0.0000  0.2379  0.2500  1
  Hg  Hg2  8  0.1396  0.1168  0.0000  1
  Hg  Hg3  4  0.0000  0.5000  0.2500  1
  Sb  Sb4  8  0.1205  0.3692  0.5000  1
  Sb  Sb5  4  0.0000  0.0000  0.2500  1
]