data_[Rb2Se2Br6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Se  2.5500  1.1500  1.0133
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.6261]
_cell_length_b [9.2103]
_cell_length_c [7.9264]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.7553]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbSeBr3]
_chemical_formula_sum '[Rb2 Se2 Br6]'
_cell_volume [409.3116]
_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  0.3003  0.2500  0.7614  1.0
  Se  Se1  2  0.2413  0.2500  0.2715  1.0
  Br  Br2  4  0.2055  0.5317  0.2846  1.0
  Br  Br3  2  0.3656  0.7500  0.8199  1.0
]