data_[Cs4Ac2Be4O8]
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
  Be  1.5700  1.0500  0.5900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.9327]
_cell_length_b [3.8006]
_cell_length_c [10.7521]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.2226]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Cs2AcBe2O4]
_chemical_formula_sum '[Cs4 Ac2 Be4 O8]'
_cell_volume [514.4702]
_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  0.1637  0.0000  0.7044  1
  Ac  Ac1  2  0.0000  0.0000  0.0000  1
  Be  Be2  4  0.1887  0.5000  0.9688  1
  O  O3  4  0.0731  0.5000  0.8958  1
  O  O4  4  0.2016  0.0000  0.0606  1
]