data_[Ba4Ta4Al4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Ta  1.5000  1.4500  0.8200
  Al  1.6100  1.2500  0.6750
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.1435]
_cell_length_b [9.4380]
_cell_length_c [7.6146]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.9075]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [BaTaAlO5]
_chemical_formula_sum '[Ba4 Ta4 Al4 O20]'
_cell_volume [465.6317]
_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
[
  Ba  Ba0  4  0.0000  0.3313  0.2500  1.0
  Ta  Ta1  4  0.0000  0.0000  0.0000  1.0
  Al  Al2  4  0.0000  0.3105  0.7500  1.0
  O  O3  8  0.0837  0.1994  0.6043  1.0
  O  O4  8  0.2049  0.4291  0.8959  1.0
  O  O5  4  0.0000  0.0543  0.2500  1.0
]