data_[Ac16H4Ir8Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  H  2.2000  0.2500  0.0000
  Ir  2.2000  1.3500  0.7650
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.4244]
_cell_length_b [14.5316]
_cell_length_c [15.0684]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ac4HIr2Pb]
_chemical_formula_sum '[Ac16 H4 Ir8 Pb4]'
_cell_volume [968.8060]
_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  0.0000  0.2658  0.1101  1
  Ac  Ac1  4  0.0000  0.0000  0.0000  1
  Ac  Ac2  4  0.0000  0.4215  0.7500  1
  Ir  Ir3  8  0.0000  0.3709  0.5616  1
  H  H4  4  0.0000  0.1639  0.2500  1
  Pb  Pb5  4  0.0000  0.1100  0.7500  1
]