data_[Sm2Fe4B4C2]
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
  B  2.0400  0.8500  0.4100
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [3.5578]
_cell_length_b [3.5578]
_cell_length_c [10.9355]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [SmFe2B2C]
_chemical_formula_sum '[Sm2 Fe4 B4 C2]'
_cell_volume [138.4217]
_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
[
  Sm  Sm0  2  0.0000  0.0000  0.5000  1.0
  Fe  Fe1  4  0.0000  0.5000  0.2500  1.0
  B  B2  4  0.0000  0.0000  0.1362  1.0
  C  C3  2  0.0000  0.0000  0.0000  1.0
]