data_[Ac4Cu1Pb3]
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 [Pmm2]
_cell_length_a [4.7840]
_cell_length_b [4.8293]
_cell_length_c [12.3757]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [Ac4CuPb3]
_chemical_formula_sum '[Ac4 Cu1 Pb3]'
_cell_volume [285.9230]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.8669  1
  Ac  Ac1  1  0.0000  0.5000  0.3602  1
  Ac  Ac2  1  0.5000  0.0000  0.1243  1
  Ac  Ac3  1  0.5000  0.5000  0.6495  1
  Cu  Cu4  1  0.5000  0.5000  0.9278  1
  Pb  Pb5  1  0.0000  0.0000  0.5903  1
  Pb  Pb6  1  0.0000  0.5000  0.0739  1
  Pb  Pb7  1  0.5000  0.0000  0.4071  1
]