data_[Ba6Dy3Mg3Nb3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Dy  1.2200  1.7500  1.1310
  Mg  1.3100  1.5000  0.8600
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [6.0185]
_cell_length_b [6.0185]
_cell_length_c [17.1422]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [Ba2DyMgNbO6]
_chemical_formula_sum '[Ba6 Dy3 Mg3 Nb3 O18]'
_cell_volume [537.7427]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.2671  1
  Ba  Ba1  3  0.0000  0.0000  0.8072  1
  Dy  Dy2  3  0.0000  0.0000  0.4741  1
  Mg  Mg3  3  0.0000  0.0000  0.6356  1
  Nb  Nb4  3  0.0000  0.0000  0.0007  1
  O  O5  9  0.0052  0.5026  0.2480  1
  O  O6  9  0.0091  0.5046  0.7323  1
]