data_[Ac16Sn6Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Sn  1.9600  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.4290]
_cell_length_b [9.1986]
_cell_length_c [8.1236]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.8257]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ac8Sn3Pb2]
_chemical_formula_sum '[Ac16 Sn6 Pb4]'
_cell_volume [1239.8738]
_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  8  0.1159  0.2495  0.4045  1
  Ac  Ac1  4  0.0963  0.5000  0.8389  1
  Ac  Ac2  4  0.1154  0.0000  0.9164  1
  Sn  Sn3  4  0.0000  0.2591  0.0000  1
  Sn  Sn4  2  0.0000  0.0000  0.5000  1
  Pb  Pb5  4  0.2497  0.0000  0.3333  1
]