data_[Rb4Cd6Hg4]
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 [12.5808]
_cell_length_b [5.1825]
_cell_length_c [8.1043]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.9811]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Cd3Hg2]
_chemical_formula_sum '[Rb4 Cd6 Hg4]'
_cell_volume [478.9720]
_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  4  0.1514  0.0000  0.7799  1.0
  Cd  Cd1  4  0.1006  0.5000  0.4228  1.0
  Cd  Cd2  2  0.0000  0.5000  0.0000  1.0
  Hg  Hg3  4  0.1482  0.0000  0.2507  1.0
]