data_[Rb12Cd4Hg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Cd  1.6900  1.5500  1.0900
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.5865]
_cell_length_b [11.5932]
_cell_length_c [9.2933]
_cell_angle_alpha [90.0000]
_cell_angle_beta [131.4428]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3CdHg]
_chemical_formula_sum '[Rb12 Cd4 Hg4]'
_cell_volume [1097.2907]
_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  0.2133  0.1911  0.2485  1.0
  Rb  Rb1  4  0.0551  0.5000  0.8354  1.0
  Cd  Cd2  4  0.0691  0.0000  0.7674  1.0
  Hg  Hg3  4  0.2043  0.0000  0.6038  1.0
]