data_[Cs20Rb4Hg8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Rb  0.8200  2.3500  1.6600
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [7.4504]
_cell_length_b [17.2070]
_cell_length_c [19.6412]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Cs5RbHg2]
_chemical_formula_sum '[Cs20 Rb4 Hg8]'
_cell_volume [2517.9917]
_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
[
  Cs  Cs0  8  0.0000  0.0686  0.1184  1
  Cs  Cs1  8  0.0000  0.3449  0.0226  1
  Cs  Cs2  4  0.0000  0.2615  0.7500  1
  Rb  Rb3  4  0.0000  0.4225  0.2500  1
  Hg  Hg4  8  0.0000  0.1485  0.5800  1
]