data_[Tb4Tl8Sb4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Tl  1.6200  1.9000  1.3325
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [7.2453]
_cell_length_b [7.3895]
_cell_length_c [10.3429]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [TbTl2SbO4]
_chemical_formula_sum '[Tb4 Tl8 Sb4 O16]'
_cell_volume [553.7476]
_cell_formula_units_Z [4]
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
[
  Tb  Tb0  4  0.2500  0.2500  0.7500  1
  Tl  Tl1  4  0.0000  0.0000  0.0000  1
  Tl  Tl2  4  0.2500  0.2500  0.2500  1
  Sb  Sb3  4  0.0000  0.0000  0.5000  1
  O  O4  8  0.0000  0.0495  0.7281  1
  O  O5  8  0.2096  0.2500  0.5244  1
]