data_[Cs4Ac2Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Ac  1.1000  1.9500  1.2600
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Pbam]
_cell_length_a [8.3990]
_cell_length_b [17.6208]
_cell_length_c [7.1567]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [55]
_chemical_formula_structural [Cs2AcSe10]
_chemical_formula_sum '[Cs4 Ac2 Se20]'
_cell_volume [1059.1706]
_cell_formula_units_Z [2]
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
[
  Cs  Cs0  4  0.1655  0.3798  0.5000  1
  Ac  Ac1  2  0.0000  0.0000  0.0000  1
  Se  Se2  8  0.1970  0.0893  0.3063  1
  Se  Se3  4  0.0796  0.4257  0.0000  1
  Se  Se4  4  0.1921  0.6326  0.0000  1
  Se  Se5  4  0.1992  0.8429  0.0000  1
]