data_[Sr8Ac2Tl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ac  1.1000  1.9500  1.2600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [P4_2/n]
_cell_length_a [10.4586]
_cell_length_b [10.4586]
_cell_length_c [6.8992]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [86]
_chemical_formula_structural [Sr4AcTl4]
_chemical_formula_sum '[Sr8 Ac2 Tl8]'
_cell_volume [754.6523]
_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
[
  Sr  Sr0  8  0.0901  0.3099  0.6145  1
  Ac  Ac1  2  0.0000  0.0000  0.0000  1
  Tl  Tl2  8  0.1266  0.2748  0.1253  1
]