data_[Li2Fe2Sn2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Fe  1.8300  1.4000  0.8525
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [3.1158]
_cell_length_b [5.1856]
_cell_length_c [9.9161]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [LiFeSnO4]
_chemical_formula_sum '[Li2 Fe2 Sn2 O8]'
_cell_volume [160.2153]
_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
[
  Li  Li0  2  0.5000  0.2208  0.9415  1.0
  Fe  Fe1  2  0.5000  0.2440  0.3508  1.0
  Sn  Sn2  2  0.0000  0.2695  0.6342  1.0
  O  O3  2  0.0000  0.0421  0.4579  1.0
  O  O4  2  0.0000  0.4502  0.2836  1.0
  O  O5  2  0.5000  0.0681  0.7294  1.0
  O  O6  2  0.5000  0.4556  0.5317  1.0
]