data_[Sr4Ac12Ir8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ac  1.1000  1.9500  1.2600
  Ir  2.2000  1.3500  0.7650
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.5503]
_cell_length_b [4.4069]
_cell_length_c [13.7265]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.8670]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [SrAc3Ir2]
_chemical_formula_sum '[Sr4 Ac12 Ir8]'
_cell_volume [909.3536]
_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
[
  Sr  Sr0  4  0.0636  0.5000  0.6950  1
  Ac  Ac1  4  0.0587  0.0000  0.1945  1
  Ac  Ac2  4  0.1893  0.0000  0.5518  1
  Ac  Ac3  4  0.1901  0.5000  0.0546  1
  Ir  Ir4  4  0.1267  0.0000  0.8833  1
  Ir  Ir5  4  0.1272  0.5000  0.3744  1
]