data_[Rb4Na14Sn4]
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 [C2/m]
_cell_length_a [12.8884]
_cell_length_b [10.4234]
_cell_length_c [6.0416]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.9640]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Na7Sn2]
_chemical_formula_sum '[Rb4 Na14 Sn4]'
_cell_volume [790.9412]
_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  0.1979  0.0000  1
  Na  Na1  8  0.2270  0.1728  0.7208  1
  Na  Na2  4  0.0489  0.5000  0.2997  1
  Na  Na3  2  0.0000  0.0000  0.5000  1
  Sn  Sn4  4  0.2228  0.5000  0.7853  1
]