data_[Ac4Pm8Tl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Pm  1.1300  1.8500  1.1100
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.9674]
_cell_length_b [29.1026]
_cell_length_c [5.6881]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ac(PmTl)2]
_chemical_formula_sum '[Ac4 Pm8 Tl8]'
_cell_volume [656.7456]
_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  0.1467  0.7500  1
  Pm  Pm1  4  0.0000  0.0498  0.2500  1
  Pm  Pm2  4  0.0000  0.2357  0.2500  1
  Tl  Tl3  4  0.0000  0.3565  0.7500  1
  Tl  Tl4  4  0.0000  0.4560  0.2500  1
]