data_[Ac8B4Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  B  2.0400  0.8500  0.4100
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [8.7455]
_cell_length_b [12.1020]
_cell_length_c [4.3266]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Ac4B2Pb]
_chemical_formula_sum '[Ac8 B4 Pb2]'
_cell_volume [457.9250]
_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  0.0000  0.2679  0.0000  1
  Ac  Ac1  4  0.2184  0.5000  0.5000  1
  B  B2  4  0.2500  0.2500  0.5000  1
  Pb  Pb3  2  0.0000  0.0000  0.0000  1
]