data_[Rb4Tl2Sb2]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [9.5215]
_cell_length_b [5.7065]
_cell_length_c [7.3787]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.8134]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Rb2TlSb]
_chemical_formula_sum '[Rb4 Tl2 Sb2]'
_cell_volume [360.9101]
_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  0.1925  0.5000  0.8543  1.0
  Rb  Rb1  2  0.4088  0.5000  0.4727  1.0
  Tl  Tl2  2  0.4929  0.0000  0.2477  1.0
  Sb  Sb3  2  0.1161  0.0000  0.1079  1.0
]