data_[Sr4Tl2Fe2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Tl  1.6200  1.9000  1.3325
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [6.0628]
_cell_length_b [6.0628]
_cell_length_c [7.4588]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [Sr2TlFeO4]
_chemical_formula_sum '[Sr4 Tl2 Fe2 O8]'
_cell_volume [274.1680]
_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  2  0.0000  0.0000  0.0000  1
  Sr  Sr1  2  0.0000  0.5000  0.7500  1
  Tl  Tl2  2  0.0000  0.0000  0.5000  1
  Fe  Fe3  2  0.0000  0.5000  0.2500  1
  O  O4  8  0.1958  0.7376  0.2001  1
]