data_[Rb4Be8Tl4Br24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Be  1.5700  1.0500  0.5900
  Tl  1.6200  1.9000  1.3325
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [11.9102]
_cell_length_b [14.0238]
_cell_length_c [10.1215]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.3023]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbBe2TlBr6]
_chemical_formula_sum '[Rb4 Be8 Tl4 Br24]'
_cell_volume [1575.0619]
_cell_formula_units_Z [4]
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  4  0.0000  0.1678  0.2500  1.0
  Be  Be1  8  0.2422  0.1003  0.7084  1.0
  Tl  Tl2  4  0.0000  0.4098  0.7500  1.0
  Br  Br3  8  0.0928  0.3894  0.1216  1.0
  Br  Br4  8  0.1450  0.2234  0.6271  1.0
  Br  Br5  8  0.1886  0.0312  0.1104  1.0
]