data_[Rb4Ba2Tl2Sb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ba  0.8900  2.1500  1.4900
  Tl  1.6200  1.9000  1.3325
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [5.2170]
_cell_length_b [10.3602]
_cell_length_c [9.2134]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [Rb2BaTlSb2]
_chemical_formula_sum '[Rb4 Ba2 Tl2 Sb4]'
_cell_volume [497.9732]
_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  0.0000  0.1690  0.8579  1
  Rb  Rb1  2  0.5000  0.0863  0.5316  1
  Ba  Ba2  2  0.0000  0.4543  0.4879  1
  Tl  Tl3  2  0.5000  0.3205  0.1455  1
  Sb  Sb4  2  0.0000  0.1801  0.2517  1
  Sb  Sb5  2  0.5000  0.4022  0.7710  1
]