data_[Rb1Tb1Sn2Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tb  1.1000  1.7500  0.9815
  Sn  1.9600  1.4500  0.8300
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [6.8410]
_cell_length_b [7.3443]
_cell_length_c [9.4660]
_cell_angle_alpha [85.8125]
_cell_angle_beta [88.0312]
_cell_angle_gamma [87.4594]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [RbTb(SnBr4)2]
_chemical_formula_sum '[Rb1 Tb1 Sn2 Br8]'
_cell_volume [473.6279]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5000  1.0
  Tb  Tb1  1  0.0000  0.0000  0.0000  1.0
  Sn  Sn2  2  0.4856  0.4804  0.7505  1.0
  Br  Br3  2  0.2297  0.3188  0.9699  1.0
  Br  Br4  2  0.2345  0.8329  0.7920  1.0
  Br  Br5  2  0.2575  0.8592  0.2142  1.0
  Br  Br6  2  0.2707  0.3771  0.5346  1.0
]