data_[Rb9Na9Mg3Cl24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [8.3267]
_cell_length_b [8.3267]
_cell_length_c [22.4680]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Rb3Na3MgCl8]
_chemical_formula_sum '[Rb9 Na9 Mg3 Cl24]'
_cell_volume [1349.1024]
_cell_formula_units_Z [3]
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  9  0.0000  0.5000  0.5000  1.0
  Na  Na1  9  0.0000  0.5000  0.0000  1.0
  Mg  Mg2  3  0.0000  0.0000  0.0000  1.0
  Cl  Cl3  18  0.0362  0.5181  0.7301  1.0
  Cl  Cl4  6  0.0000  0.0000  0.2640  1.0
]