data_[Pm4Er12Tl12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Er  1.2400  1.7500  1.0300
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [P2_13]
_cell_length_a [9.3385]
_cell_length_b [9.3385]
_cell_length_c [9.3385]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [198]
_chemical_formula_structural [Pm(ErTl)3]
_chemical_formula_sum '[Pm4 Er12 Tl12]'
_cell_volume [814.3779]
_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
[
  Pm  Pm0  4  0.0682  0.5682  0.9318  1
  Er  Er1  4  0.0841  0.4159  0.5841  1
  Er  Er2  4  0.1775  0.8225  0.3225  1
  Er  Er3  4  0.1806  0.1806  0.1806  1
  Tl  Tl4  12  0.0006  0.7383  0.6159  1
]