data_[Rb2Sn4Br8]
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
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [16.8137]
_cell_length_b [5.0048]
_cell_length_c [7.3693]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.4435]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb(SnBr2)2]
_chemical_formula_sum '[Rb2 Sn4 Br8]'
_cell_volume [573.1535]
_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  0.0000  0.0000  0.0000  1
  Sn  Sn1  4  0.2308  0.5000  0.7251  1
  Br  Br2  4  0.1442  0.0000  0.5144  1
  Br  Br3  4  0.1475  0.5000  0.0057  1
]