data_[Rb6Na8Tl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [7.6787]
_cell_length_b [12.4903]
_cell_length_c [8.5595]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Rb3Na4Tl]
_chemical_formula_sum '[Rb6 Na8 Tl2]'
_cell_volume [820.9328]
_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  4  0.0000  0.1916  0.3186  1.0
  Rb  Rb1  2  0.0000  0.5000  0.5154  1.0
  Na  Na2  4  0.0000  0.2353  0.8488  1.0
  Na  Na3  4  0.2337  0.5000  0.0356  1.0
  Tl  Tl4  2  0.0000  0.0000  0.6716  1.0
]