data_[Pm12Tm2Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Tm  1.2500  1.7500  1.0950
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.0570]
_cell_length_b [3.8061]
_cell_length_c [12.1278]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.8622]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm6TmTl2]
_chemical_formula_sum '[Pm12 Tm2 Tl4]'
_cell_volume [573.6566]
_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
[
  Pm  Pm0  4  0.0178  0.0000  0.3437  1
  Pm  Pm1  4  0.1814  0.5000  0.8770  1
  Pm  Pm2  4  0.1938  0.5000  0.5921  1
  Tm  Tm3  2  0.0000  0.0000  0.0000  1
  Tl  Tl4  4  0.1361  0.5000  0.1937  1
]