data_[Rb3Na3Sn6Br18]
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
  Sn  1.9600  1.4500  0.8300
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [7.8409]
_cell_length_b [7.8409]
_cell_length_c [21.1622]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [RbNa(SnBr3)2]
_chemical_formula_sum '[Rb3 Na3 Sn6 Br18]'
_cell_volume [1126.7442]
_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  3  0.0000  0.0000  0.2002  1.0
  Na  Na1  3  0.0000  0.0000  0.6816  1.0
  Sn  Sn2  3  0.0000  0.0000  0.4810  1.0
  Sn  Sn3  3  0.0000  0.0000  0.9898  1.0
  Br  Br4  9  0.0107  0.5905  0.2503  1.0
  Br  Br5  9  0.0269  0.3375  0.0781  1.0
]