data_[Rb2Ac2Tl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ac  1.1000  1.9500  1.2600
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [4.2461]
_cell_length_b [4.2461]
_cell_length_c [16.0265]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [RbAcTl]
_chemical_formula_sum '[Rb2 Ac2 Tl2]'
_cell_volume [288.9535]
_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  0.0000  0.0000  0.0241  1
  Ac  Ac1  2  0.0000  0.0000  0.2890  1
  Tl  Tl2  2  0.0000  0.0000  0.6868  1
]