data_[Rb1Tb2Cu1Br8]
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
  Cu  1.9000  1.3500  0.8200
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [7.7681]
_cell_length_b [8.5070]
_cell_length_c [8.5573]
_cell_angle_alpha [78.1869]
_cell_angle_beta [66.6628]
_cell_angle_gamma [86.7623]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [RbTb2CuBr8]
_chemical_formula_sum '[Rb1 Tb2 Cu1 Br8]'
_cell_volume [508.0360]
_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
  Tb  Tb1  2  0.0357  0.7583  0.4727  1.0
  Cu  Cu2  1  0.0000  0.0000  0.0000  1.0
  Br  Br3  2  0.1620  0.1894  0.7639  1.0
  Br  Br4  2  0.2132  0.0635  0.2854  1.0
  Br  Br5  2  0.2165  0.5020  0.2952  1.0
  Br  Br6  2  0.2847  0.7197  0.6221  1.0
]