data_[Rb2Tl6Te4]
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
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Pnc2]
_cell_length_a [19.3116]
_cell_length_b [10.5789]
_cell_length_c [10.6570]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [30]
_chemical_formula_structural [RbTl3Te2]
_chemical_formula_sum '[Rb2 Tl6 Te4]'
_cell_volume [2177.1810]
_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  0.5000  0.0000  0.1439  1
  Tl  Tl1  4  0.3884  0.5072  0.9387  1
  Tl  Tl2  2  0.5000  0.0000  0.7456  1
  Te  Te3  4  0.4963  0.1936  0.5198  1
]