data_[Sr4Nb2O8F2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.8075]
_cell_length_b [3.2944]
_cell_length_c [7.1234]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.1433]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2NbO4F]
_chemical_formula_sum '[Sr4 Nb2 O8 F2]'
_cell_volume [227.6785]
_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
[
  Sr  Sr0  4  0.1818  0.0000  0.6857  1
  Nb  Nb1  2  0.0000  0.0000  0.0000  1
  O  O2  4  0.1038  0.5000  0.9449  1
  O  O3  4  0.1431  0.0000  0.2889  1
  F  F4  2  0.0000  0.5000  0.5000  1
]