data_[Pr18Sn3I24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Sn  1.9600  1.4500  0.8300
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [7.8171]
_cell_length_b [7.8171]
_cell_length_c [35.0609]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Pr6SnI8]
_chemical_formula_sum '[Pr18 Sn3 I24]'
_cell_volume [1855.4280]
_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  0.0000  0.6853  0.9487  1
  Sn  Sn1  3  0.0000  0.0000  0.0000  1
  I  I2  18  0.0000  0.3376  0.8922  1
  I  I3  6  0.0000  0.0000  0.3333  1
]