data_[Ac2Pr4Er2Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Pr  1.1300  1.8500  1.0600
  Er  1.2400  1.7500  1.0300
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.9141]
_cell_length_b [9.6457]
_cell_length_c [8.5986]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [AcPr2ErTl2]
_chemical_formula_sum '[Ac2 Pr4 Er2 Tl4]'
_cell_volume [407.5726]
_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
[
  Ac  Ac0  2  0.0000  0.4181  0.4827  1
  Pr  Pr1  2  0.0000  0.1746  0.8665  1
  Pr  Pr2  2  0.5000  0.0801  0.5335  1
  Er  Er3  2  0.5000  0.3116  0.1479  1
  Tl  Tl4  2  0.0000  0.1310  0.2413  1
  Tl  Tl5  2  0.5000  0.3794  0.7738  1
]