data_[Ac12Pm4Sn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Pm  1.1300  1.8500  1.1100
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [7.6855]
_cell_length_b [15.5660]
_cell_length_c [8.4373]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Ac3PmSn2]
_chemical_formula_sum '[Ac12 Pm4 Sn8]'
_cell_volume [1009.3711]
_cell_formula_units_Z [4]
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
[
  Ac  Ac0  8  0.0000  0.2119  0.2500  1
  Ac  Ac1  4  0.0000  0.5000  0.2500  1
  Pm  Pm2  4  0.0000  0.0000  0.0000  1
  Sn  Sn3  8  0.1901  0.3607  0.0000  1
]