data_[Ac8Tl4Sb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Tl  1.6200  1.9000  1.3325
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.8789]
_cell_length_b [26.4551]
_cell_length_c [4.7698]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ac2TlSb]
_chemical_formula_sum '[Ac8 Tl4 Sb4]'
_cell_volume [615.6474]
_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
[
  Ac  Ac0  4  0.0000  0.0639  0.2500  1
  Ac  Ac1  4  0.0000  0.3146  0.2500  1
  Tl  Tl2  4  0.0000  0.4589  0.2500  1
  Sb  Sb3  4  0.0000  0.1883  0.2500  1
]