data_[Ac2Pm6Y8]
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
  Y  1.2200  1.8000  1.0400
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [11.7215]
_cell_length_b [7.4254]
_cell_length_c [6.4020]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [AcPm3Y4]
_chemical_formula_sum '[Ac2 Pm6 Y8]'
_cell_volume [557.2112]
_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  0.0000  0.1254  0.9862  1
  Pm  Pm1  4  0.2482  0.1283  0.6465  1
  Pm  Pm2  2  0.0000  0.8691  0.4802  1
  Y  Y3  4  0.2476  0.6208  0.6465  1
  Y  Y4  2  0.0000  0.3812  0.4823  1
  Y  Y5  2  0.0000  0.6233  0.9807  1
]