data_[Al4As4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Al  1.6100  1.2500  0.6750
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [5.3636]
_cell_length_b [8.0019]
_cell_length_c [6.1116]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [AlAsO4]
_chemical_formula_sum '[Al4 As4 O16]'
_cell_volume [262.3062]
_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
[
  Al  Al0  4  0.0000  0.0000  0.0000  1.0
  As  As1  4  0.0000  0.3447  0.7500  1.0
  O  O2  8  0.0000  0.2288  0.5200  1.0
  O  O3  8  0.2397  0.0213  0.2500  1.0
]