data_[Rb4Na8Sn4]
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 [P2_1/c]
_cell_length_a [9.6978]
_cell_length_b [7.1174]
_cell_length_c [11.0918]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.5825]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [RbNa2Sn]
_chemical_formula_sum '[Rb4 Na8 Sn4]'
_cell_volume [630.3165]
_cell_formula_units_Z [4]
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  0.3727  0.1001  0.6133  1.0
  Na  Na1  4  0.0381  0.1873  0.7178  1.0
  Na  Na2  4  0.1770  0.6446  0.6352  1.0
  Sn  Sn3  4  0.3293  0.5975  0.4361  1.0
]