data_[Ac8Pm2Se14]
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
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [14.5549]
_cell_length_b [4.3139]
_cell_length_c [12.8089]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.3170]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Ac4PmSe7]
_chemical_formula_sum '[Ac8 Pm2 Se14]'
_cell_volume [775.6766]
_cell_formula_units_Z [2]
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  2  0.0020  0.0000  0.9956  1
  Ac  Ac1  2  0.1092  0.0000  0.4299  1
  Ac  Ac2  2  0.2016  0.5000  0.8079  1
  Ac  Ac3  2  0.3057  0.0000  0.1987  1
  Pm  Pm4  2  0.3849  0.5000  0.5762  1
  Se  Se5  2  0.0412  0.0000  0.7728  1
  Se  Se6  2  0.1630  0.5000  0.0515  1
  Se  Se7  2  0.2391  0.5000  0.3586  1
  Se  Se8  2  0.2695  0.0000  0.6500  1
  Se  Se9  2  0.3412  0.0000  0.9516  1
  Se  Se10  2  0.4600  0.5000  0.2151  1
  Se  Se11  2  0.4827  0.0000  0.4922  1
]