data_[Ba6Se6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3c]
_cell_length_a [5.9841]
_cell_length_b [5.9841]
_cell_length_c [18.0994]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [161]
_chemical_formula_structural [BaSeO3]
_chemical_formula_sum '[Ba6 Se6 O18]'
_cell_volume [561.2925]
_cell_formula_units_Z [6]
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  6  0.0000  0.0000  0.2194  1.0
  Se  Se1  6  0.0000  0.0000  0.4838  1.0
  O  O2  18  0.1244  0.3729  0.1084  1.0
]