data_[Pm6Sm6Sn9]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.3540]
_cell_length_b [5.3540]
_cell_length_c [26.6204]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Pm2Sm2Sn3]
_chemical_formula_sum '[Pm6 Sm6 Sn9]'
_cell_volume [660.8593]
_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  6  0.0000  0.0000  0.3783  1
  Sm  Sm1  6  0.0000  0.0000  0.1265  1
  Sn  Sn2  6  0.0000  0.0000  0.2585  1
  Sn  Sn3  3  0.0000  0.0000  0.5000  1
]