data_[Ac4Zr4As4O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Zr  1.3300  1.5500  0.8600
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.9723]
_cell_length_b [12.4947]
_cell_length_c [7.4728]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [AcZrAsO2]
_chemical_formula_sum '[Ac4 Zr4 As4 O8]'
_cell_volume [370.8992]
_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  4  0.0000  0.2723  0.2500  1
  Zr  Zr1  4  0.0000  0.0000  0.0000  1
  As  As2  4  0.0000  0.4585  0.7500  1
  O  O3  8  0.0000  0.1626  0.5521  1
]