data_[Rb4Sn2F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sn  1.9600  1.4500  0.8300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.5215]
_cell_length_b [7.2912]
_cell_length_c [8.0356]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.4776]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Rb2SnF4]
_chemical_formula_sum '[Rb4 Sn2 F8]'
_cell_volume [394.4533]
_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  2  0.2010  0.7500  0.8114  1
  Rb  Rb1  2  0.4079  0.7500  0.3972  1
  Sn  Sn2  2  0.2655  0.2500  0.0742  1
  F  F3  4  0.4956  0.0501  0.2380  1
  F  F4  2  0.0739  0.7500  0.0706  1
  F  F5  2  0.2058  0.2500  0.3044  1
]