data_[Sm8Cr4N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Cr  1.6600  1.4000  0.9400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.8924]
_cell_length_b [5.1017]
_cell_length_c [6.6369]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.3281]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sm2CrN2]
_chemical_formula_sum '[Sm8 Cr4 N8]'
_cell_volume [318.3423]
_cell_formula_units_Z [4]
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  0.0385  0.0000  0.2841  1
  Sm  Sm1  4  0.1796  0.5000  0.1120  1
  Cr  Cr2  4  0.1294  0.5000  0.6223  1
  N  N3  4  0.0108  0.5000  0.2876  1
  N  N4  4  0.1846  0.0000  0.1057  1
]