data_[Pm3Pr24Sn18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Pr  1.1300  1.8500  1.0600
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [9.4418]
_cell_length_b [9.4418]
_cell_length_c [19.9691]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Pm(Pr4Sn3)2]
_chemical_formula_sum '[Pm3 Pr24 Sn18]'
_cell_volume [1541.6936]
_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
[
  Pr  Pr0  18  0.0004  0.6654  0.8966  1
  Pr  Pr1  6  0.0000  0.0000  0.3335  1
  Pm  Pm2  3  0.0000  0.0000  0.0000  1
  Sn  Sn3  18  0.0001  0.6691  0.0675  1
]