data_[Rb1Sr2Tb1Br8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sr  0.9500  2.0000  1.3200
  Tb  1.1000  1.7500  0.9815
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.9485]
_cell_length_b [9.5582]
_cell_length_c [7.2099]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.1586]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [RbSr2TbBr8]
_chemical_formula_sum '[Rb1 Sr2 Tb1 Br8]'
_cell_volume [478.8413]
_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  0.5000  0.0000  1.0
  Sr  Sr1  2  0.5000  0.2499  0.5000  1.0
  Tb  Tb2  1  0.0000  0.0000  0.0000  1.0
  Br  Br3  4  0.2332  0.2086  0.1589  1.0
  Br  Br4  2  0.2520  0.0000  0.6784  1.0
  Br  Br5  2  0.2657  0.5000  0.6215  1.0
]