data_[Na4Re4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Re  1.9000  1.3500  0.7125
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.4041]
_cell_length_b [10.1079]
_cell_length_c [5.5546]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.5663]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2Re2O7]
_chemical_formula_sum '[Na4 Re4 O14]'
_cell_volume [352.2579]
_cell_formula_units_Z [2]
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  4  0.0000  0.3183  0.0000  1.0
  Re  Re1  4  0.2465  0.5000  0.6216  1.0
  O  O2  8  0.2145  0.1544  0.2264  1.0
  O  O3  4  0.0625  0.5000  0.3038  1.0
  O  O4  2  0.0000  0.0000  0.5000  1.0
]