data_[Ac2Tb16Sm8]
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
  Sm  1.1700  1.8500  1.2290
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.2610]
_cell_length_b [7.1030]
_cell_length_c [12.5126]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.8120]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ac(Tb2Sm)4]
_chemical_formula_sum '[Ac2 Tb16 Sm8]'
_cell_volume [881.6624]
_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
[
  Tb  Tb0  8  0.0905  0.2657  0.2903  1
  Tb  Tb1  4  0.1496  0.5000  0.5644  1
  Tb  Tb2  4  0.1900  0.0000  0.8427  1
  Ac  Ac3  2  0.0000  0.0000  0.5000  1
  Sm  Sm4  4  0.0000  0.2597  0.0000  1
  Sm  Sm5  4  0.2187  0.5000  0.8557  1
]