data_[Sr3Ac6Tl3O18]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [6.2589]
_cell_length_b [6.2589]
_cell_length_c [16.0849]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [SrAc2TlO6]
_chemical_formula_sum '[Sr3 Ac6 Tl3 O18]'
_cell_volume [545.6842]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.1952  1
  Ac  Ac1  3  0.0000  0.0000  0.4696  1
  Ac  Ac2  3  0.0000  0.0000  0.9717  1
  Tl  Tl3  3  0.0000  0.0000  0.6891  1
  O  O4  9  0.0526  0.3525  0.7506  1
  O  O5  9  0.0593  0.6725  0.2536  1
]