data_[Pm16Tl8Te4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Tl  1.6200  1.9000  1.3325
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [I-42d]
_cell_length_a [9.5361]
_cell_length_b [9.5361]
_cell_length_c [9.5178]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [122]
_chemical_formula_structural [Pm4Tl2Te]
_chemical_formula_sum '[Pm16 Tl8 Te4]'
_cell_volume [865.5322]
_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  16  0.0727  0.6810  0.4440  1
  Tl  Tl1  8  0.1268  0.7500  0.1250  1
  Te  Te2  4  0.0000  0.0000  0.5000  1
]