data_[Ac12Pb4O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [8.1410]
_cell_length_b [11.5920]
_cell_length_c [8.2919]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ac3PbO7]
_chemical_formula_sum '[Ac12 Pb4 O28]'
_cell_volume [782.5092]
_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  0.2363  0.2345  0.2500  1
  Ac  Ac1  4  0.0000  0.5000  0.0000  1
  Pb  Pb2  4  0.0000  0.0000  0.0000  1
  O  O3  16  0.2070  0.1234  0.5248  1
  O  O4  4  0.0000  0.0762  0.2500  1
  O  O5  4  0.0000  0.3662  0.2500  1
  O  O6  4  0.0000  0.3706  0.7500  1
]