data_[Rb18Sb12Cl54]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sb  2.0500  1.4500  0.8300
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [R-3c]
_cell_length_a [12.9222]
_cell_length_b [12.9222]
_cell_length_c [19.3010]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [167]
_chemical_formula_structural [Rb3Sb2Cl9]
_chemical_formula_sum '[Rb18 Sb12 Cl54]'
_cell_volume [2791.1622]
_cell_formula_units_Z [6]
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  18  0.0000  0.3274  0.2500  1
  Sb  Sb1  12  0.0000  0.0000  0.1548  1
  Cl  Cl2  36  0.0039  0.1688  0.0877  1
  Cl  Cl3  18  0.0000  0.1744  0.7500  1
]