data_[Ac4Tb8Pm12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Tb  1.1000  1.7500  0.9815
  Pm  1.1300  1.8500  1.1100
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.2833]
_cell_length_b [10.1120]
_cell_length_c [9.1714]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.9492]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [AcTb2Pm3]
_chemical_formula_sum '[Ac4 Tb8 Pm12]'
_cell_volume [842.2919]
_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
[
  Tb  Tb0  8  0.1282  0.2540  0.6240  1
  Ac  Ac1  4  0.0000  0.0687  0.2500  1
  Pm  Pm2  8  0.2287  0.4105  0.9862  1
  Pm  Pm3  4  0.0000  0.4101  0.2500  1
]