data_[Na6Fe3Re3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Fe  1.8300  1.4000  0.8525
  Re  1.9000  1.3500  0.7125
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.4475]
_cell_length_b [5.4475]
_cell_length_c [13.4043]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Na2FeReO6]
_chemical_formula_sum '[Na6 Fe3 Re3 O18]'
_cell_volume [344.4833]
_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
[
  Na  Na0  6  0.0000  0.0000  0.2509  1.0
  Fe  Fe1  3  0.0000  0.0000  0.0000  1.0
  Re  Re2  3  -0.0000  0.0000  0.5000  1.0
  O  O3  18  0.0119  0.5667  0.2478  1.0
]