data_[Pm24Ge3Te12Se9]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ge  2.0100  1.2500  0.7700
  Te  2.1000  1.4000  1.2933
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [8.6031]
_cell_length_b [8.6031]
_cell_length_c [21.7650]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Pm8GeTe4Se3]
_chemical_formula_sum '[Pm24 Ge3 Te12 Se9]'
_cell_volume [1395.0656]
_cell_formula_units_Z [3]
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  18  0.0056  0.5028  0.7400  1
  Pm  Pm1  6  0.0000  0.0000  0.2604  1
  Ge  Ge2  3  -0.0000  -0.0000  0.0000  1
  Te  Te3  9  0.0000  0.5000  0.5000  1
  Te  Te4  3  -0.0000  -0.0000  0.5000  1
  Se  Se5  9  0.0000  0.5000  0.0000  1
]