data_[Ac16Tb4Y2]
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
  Y  1.2200  1.8000  1.0400
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [19.6259]
_cell_length_b [5.5416]
_cell_length_c [8.6792]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.5294]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ac8Tb2Y]
_chemical_formula_sum '[Ac16 Tb4 Y2]'
_cell_volume [909.4778]
_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  4  0.0473  0.0000  0.7293  1
  Ac  Ac1  4  0.0943  0.5000  0.4534  1
  Ac  Ac2  4  0.1387  0.0000  0.1909  1
  Ac  Ac3  4  0.1818  0.5000  0.9152  1
  Tb  Tb4  4  0.2264  0.0000  0.6325  1
  Y  Y5  2  0.0000  0.5000  0.0000  1
]