data_[Rb2Nb2Tl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Nb  1.6000  1.4500  0.8200
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [P1]
_cell_length_a [3.4389]
_cell_length_b [5.5511]
_cell_length_c [12.5582]
_cell_angle_alpha [82.9902]
_cell_angle_beta [87.1295]
_cell_angle_gamma [72.0570]
_symmetry_Int_Tables_number [1]
_chemical_formula_structural [RbNbTl]
_chemical_formula_sum '[Rb2 Nb2 Tl2]'
_cell_volume [226.3485]
_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  1  0.0962  0.1228  0.1434  1
  Rb  Rb1  1  0.6758  0.7153  0.8065  1
  Nb  Nb2  1  0.2469  0.6823  0.5283  1
  Nb  Nb3  1  0.8144  0.5992  0.3795  1
  Tl  Tl4  1  0.5419  0.1339  0.4039  1
  Tl  Tl5  1  0.9622  0.2135  0.6190  1
]