data_[Rb8Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.9230]
_cell_length_b [4.7994]
_cell_length_c [10.6836]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.9364]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Tl]
_chemical_formula_sum '[Rb8 Tl4]'
_cell_volume [709.7729]
_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  0.0236  0.5000  0.1897  1.0
  Rb  Rb1  4  0.1749  0.0000  0.6516  1.0
  Tl  Tl2  4  0.1947  0.0000  0.0374  1.0
]