data_[Rb6Na8Sn2]
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
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [7.1047]
_cell_length_b [8.0344]
_cell_length_c [14.5336]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Rb3Na4Sn]
_chemical_formula_sum '[Rb6 Na8 Sn2]'
_cell_volume [829.6072]
_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  0.0000  0.2384  0.4326  1.0
  Rb  Rb1  2  0.0000  0.0000  0.0919  1.0
  Na  Na2  4  0.0000  0.2737  0.8012  1.0
  Na  Na3  4  0.2396  0.5000  0.1568  1.0
  Sn  Sn4  2  0.0000  0.5000  0.9760  1.0
]