data_[Ac12Cu4Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Cu  1.9000  1.3500  0.8200
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [17.1129]
_cell_length_b [6.9023]
_cell_length_c [7.0660]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.9751]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Ac3CuPb2]
_chemical_formula_sum '[Ac12 Cu4 Pb8]'
_cell_volume [816.4575]
_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
[
  Ac  Ac0  8  0.1632  0.1031  0.6146  1
  Ac  Ac1  4  0.0000  0.3452  0.2500  1
  Cu  Cu2  4  0.0000  0.1310  0.7500  1
  Pb  Pb3  8  0.1618  0.4016  0.0411  1
]