data_[K4Ac8Pb4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  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 [4.0479]
_cell_length_b [14.7351]
_cell_length_c [11.7093]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [KAc2PbO4]
_chemical_formula_sum '[K4 Ac8 Pb4 O16]'
_cell_volume [698.4162]
_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
[
  K  K0  4  0.0000  0.0155  0.7500  1
  Ac  Ac1  8  0.0000  0.3711  0.5552  1
  Pb  Pb2  4  0.0000  0.2986  0.2500  1
  O  O3  8  0.0000  0.2187  0.0885  1
  O  O4  4  0.0000  0.0000  0.0000  1
  O  O5  4  0.0000  0.4094  0.7500  1
]