data_[Sm4Fe4Si4N2]
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
  Si  1.9000  1.1000  0.5400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.7185]
_cell_length_b [3.8958]
_cell_length_c [6.8993]
_cell_angle_alpha [90.0000]
_cell_angle_beta [128.7563]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm2Fe2Si2N]
_chemical_formula_sum '[Sm4 Fe4 Si4 N2]'
_cell_volume [224.6620]
_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  4  0.0604  0.5000  0.2929  1.0
  Fe  Fe1  4  0.1959  0.0000  0.0846  1.0
  Si  Si2  4  0.1649  0.0000  0.7176  1.0
  N  N3  2  0.0000  0.0000  0.0000  1.0
]