data_[Pm16Tl2Sb4]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [19.6350]
_cell_length_b [5.0324]
_cell_length_c [7.2924]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.0940]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm8TlSb2]
_chemical_formula_sum '[Pm16 Tl2 Sb4]'
_cell_volume [709.4181]
_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  0.0171  0.0000  0.7564  1
  Pm  Pm1  4  0.0947  0.5000  0.4887  1
  Pm  Pm2  4  0.1637  0.5000  0.0200  1
  Pm  Pm3  4  0.2157  0.0000  0.3477  1
  Tl  Tl4  2  0.0000  0.5000  0.0000  1
  Sb  Sb5  4  0.1803  0.0000  0.7647  1
]