data_[Sm3Fe6O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [3.6089]
_cell_length_b [3.6089]
_cell_length_c [24.7129]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Sm(FeO2)2]
_chemical_formula_sum '[Sm3 Fe6 O12]'
_cell_volume [278.7492]
_cell_formula_units_Z [3]
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
[
  Sm  Sm0  3  0.0000  0.0000  0.0000  1.0
  Fe  Fe1  6  0.0000  0.0000  0.2113  1.0
  O  O2  6  0.0000  0.0000  0.1273  1.0
  O  O3  6  0.0000  0.0000  0.2902  1.0
]