data_[Sr4Fe4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.7238]
_cell_length_b [9.5762]
_cell_length_c [5.1180]
_cell_angle_alpha [90.0000]
_cell_angle_beta [100.3447]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2Fe2O7]
_chemical_formula_sum '[Sr4 Fe4 O14]'
_cell_volume [372.3978]
_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  0.0000  0.2981  0.0000  1
  Fe  Fe1  4  0.2209  0.0000  0.4226  1
  O  O2  8  0.2419  0.1443  0.2295  1
  O  O3  4  0.1364  0.5000  0.2761  1
  O  O4  2  0.0000  0.0000  0.5000  1
]